Welcome to the DESI MWS data Model!¶
The DESI MWS data Tree¶
This hosts the key products from the RVSpecfit and FERRE pipelines. The outputs are groups two pipelines are given separately with the exceptoin of mwsall table that combined the outputs from the two pipelines in one file, as well as identifies duplicates observed in different surveys and programs.
DESI MWS data
rv_output¶
rv_output represents the top level of the directory tree of
RVSpecfit outputs.
Contents:
RVRUN¶
Results from a given RVSpecfit run
Contents:
healpix¶
Fit results from spectra grouped by healpix.
Contents:
SURVEY¶
Fit results from a given survey
Contents:
PROGRAM¶
Fit results grouped by PROGRAM.
Contents:
PIXGROUP¶
Fit results from a given healpixel group (HEALPIX//100)
Contents:
rv fits files¶
Fit results of coadded spectrin within a given healpixel
Contents:
rvmod_coadd¶
- Summary:
This is the file containing the best fit models to spectra from rvspecfit
- Naming Convention:
rvmod_coadd-sv3-bright-10016.fitsfor a sv3 survey, bright program and healpixel 10016- File Type:
FITS, 551 KB This section gives the type of the file and its approximate size.
Contents¶
Number |
EXTNAME |
Type |
Contents |
|---|---|---|---|
IMAGE |
Empty HDU |
||
B_WAVELENGTH |
IMAGE |
Wavelength array of b-channel spectra |
|
B_MODEL |
IMAGE |
Flux array of best-fit model b-channel spectra |
|
R_WAVELENGTH |
IMAGE |
Wavelength array of r-channel spectra |
|
R_MODEL |
IMAGE |
Flux array of best-fit model r-channel spectra |
|
Z_WAVELENGTH |
IMAGE |
Wavelength array of z-channel spectra |
|
Z_MODEL |
IMAGE |
Flux array of best-fit model z-channel spectra |
|
FIBERMAP |
BINTABLE |
Information about objects inherited from targeting |
FITS Header Units¶
HDU0¶
Empty
Required Header Keywords¶
None
KEY |
Example Value |
Type |
Comment |
|---|---|---|---|
TMPLCON0 |
desi_b |
str |
Spec arm config name |
TMPLREV0 |
v211202 |
str |
Spec template revision |
TMPLSVR0 |
0.1.0.210117+devfee7ee |
str |
Spec template soft version |
TMPLCON1 |
desi_r |
str |
Spec arm config name |
TMPLREV1 |
v211202 |
str |
Spec template revision |
TMPLSVR1 |
0.1.0.210117+devfee7ee |
str |
Spec template soft version |
TMPLCON2 |
desi_z |
str |
Spec arm config name |
TMPLREV2 |
v211202 |
str |
Spec template revision |
TMPLSVR2 |
0.1.0.210117+devfee7ee |
str |
Spec template soft version |
RVS_CONF |
/global/cfs/cdirs/desi/science/mws/scripts/configs/config_211202.yaml |
str |
|
SPGRP |
healpix |
str |
|
SPGRPVAL |
10016 |
int |
|
HPXPIXEL |
10016 |
int |
|
HPXNSIDE |
64 |
int |
|
HPXNEST |
True |
str |
|
CHECKSUM |
9HDaDFDY9FDaAFDW |
str |
HDU checksum updated 2022-03-13T17:03:18 |
DATASUM |
0 |
str |
data unit checksum updated 2022-03-13T17:03:18 |
Empty HDU.
HDU1¶
EXTNAME = B_WAVELENGTH
The wavelength vector for the spectra
Required Header Keywords¶
None
KEY |
Example Value |
Type |
Comment |
|---|---|---|---|
NAXIS1 |
2751 |
int |
|
CHECKSUM |
fCA2iB32fBA2fB32 |
str |
HDU checksum updated 2022-03-13T17:03:18 |
DATASUM |
979185614 |
str |
data unit checksum updated 2022-03-13T17:03:18 |
Data: FITS image [float64, 2751]
HDU2¶
EXTNAME = B_MODEL
The best fit model in the B arm of the instrument. This HDU contains as many rows as many there are rows in the rvtab table. They also match one-to-one in terms of order.
Required Header Keywords¶
None
KEY |
Example Value |
Type |
Comment |
|---|---|---|---|
NAXIS1 |
2751 |
int |
|
NAXIS2 |
7 |
int |
|
CHECKSUM |
DTaaDRUTDRZYDRZY |
str |
HDU checksum updated 2022-03-13T17:03:18 |
DATASUM |
2579859831 |
str |
data unit checksum updated 2022-03-13T17:03:18 |
Data: FITS image [float64, 2751x7]
HDU3¶
EXTNAME = R_WAVELENGTH
The wavelength vector for the R arm of the instrument
Required Header Keywords¶
None
KEY |
Example Value |
Type |
Comment |
|---|---|---|---|
NAXIS1 |
2326 |
int |
|
CHECKSUM |
fLCriLCofLCofLCo |
str |
HDU checksum updated 2022-03-13T17:03:18 |
DATASUM |
456732359 |
str |
data unit checksum updated 2022-03-13T17:03:18 |
Data: FITS image [float64, 2326]
HDU4¶
EXTNAME = R_MODEL
The best fit model in the R arm of the instrument. This HDU contains as many rows as many there are rows in the rvtab table. They also match one-to-one in terms of order.
Required Header Keywords¶
None
KEY |
Example Value |
Type |
Comment |
|---|---|---|---|
NAXIS1 |
2326 |
int |
|
NAXIS2 |
7 |
int |
|
CHECKSUM |
3DbXABZW3BbWABZW |
str |
HDU checksum updated 2022-03-13T17:03:18 |
DATASUM |
3703740820 |
str |
data unit checksum updated 2022-03-13T17:03:18 |
Data: FITS image [float64, 2326x7]
HDU5¶
EXTNAME = Z_WAVELENGTH
The wavelength vector of the Z arm of the instrument
Required Header Keywords¶
None
KEY |
Example Value |
Type |
Comment |
|---|---|---|---|
NAXIS1 |
2881 |
int |
|
CHECKSUM |
QiJBSZGAQfGAQZGA |
str |
HDU checksum updated 2022-03-13T17:03:18 |
DATASUM |
3106662670 |
str |
data unit checksum updated 2022-03-13T17:03:18 |
Data: FITS image [float64, 2881]
HDU6¶
EXTNAME = Z_MODEL
The best fit model in the Z arm of the instrument. This HDU contains as many rows as many there are rows in the rvtab table. They also match one-to-one in terms of order.
Required Header Keywords¶
None
KEY |
Example Value |
Type |
Comment |
|---|---|---|---|
NAXIS1 |
2881 |
int |
|
NAXIS2 |
7 |
int |
|
CHECKSUM |
daGBfY99daGAdY97 |
str |
HDU checksum updated 2022-03-13T17:03:18 |
DATASUM |
1748435426 |
str |
data unit checksum updated 2022-03-13T17:03:18 |
Data: FITS image [float64, 2881x7]
HDU7¶
EXTNAME = FIBERMAP
The FIBERMAP targeting table for the objects. The same and in the same order as in RVTAB
Required Header Keywords¶
None
KEY |
Example Value |
Type |
Comment |
|---|---|---|---|
NAXIS1 |
341 |
int |
length of dimension 1 |
NAXIS2 |
7 |
int |
length of dimension 2 |
CHECKSUM |
eMIggKIfeKIfeKIf |
str |
HDU checksum updated 2022-03-13T17:03:18 |
DATASUM |
19021304 |
str |
data unit checksum updated 2022-03-13T17:03:18 |
Required Data Table Columns¶
Name |
Type |
Units |
Description |
|---|---|---|---|
TARGETID |
int64 |
Unique DESI target ID |
|
COADD_FIBERSTATUS |
int32 |
bitwise-AND of input FIBERSTATUS |
|
TARGET_RA |
float64 |
deg |
Target right ascension |
TARGET_DEC |
float64 |
deg |
Target declination |
PMRA |
float32 |
mas yr^-1 |
proper motion in the +RA direction (already including cos(dec)) |
PMDEC |
float32 |
mas yr^-1 |
Proper motion in the +Dec direction |
REF_EPOCH |
float32 |
yr |
Reference epoch for Gaia/Tycho astrometry. Typically 2015.5 for Gaia |
FA_TARGET |
int64 |
Targeting bit internally used by fiberassign (linked with FA_TYPE) |
|
FA_TYPE |
binary |
Fiberassign internal target type (science, standard, sky, safe, suppsky) |
|
OBJTYPE |
char[3] |
Object type: TGT, SKY, NON, BAD |
|
SUBPRIORITY |
float64 |
Random subpriority [0-1) to break assignment ties |
|
OBSCONDITIONS |
int32 |
Bitmask of allowed observing conditions |
|
RELEASE |
int16 |
Imaging surveys release ID |
|
BRICKNAME |
char[8] |
Brick name from tractor input |
|
BRICKID |
int32 |
Brick ID from tractor input |
|
BRICK_OBJID |
int32 |
Imaging Surveys OBJID on that brick |
|
MORPHTYPE |
char[4] |
Imaging Surveys morphological type from Tractor |
|
EBV |
float32 |
mag |
Galactic extinction E(B-V) reddening from SFD98 |
FLUX_G |
float32 |
nanomaggy |
Flux in the Legacy Survey g-band (AB) |
FLUX_R |
float32 |
nanomaggy |
Flux in the Legacy Survey r-band (AB) |
FLUX_Z |
float32 |
nanomaggy |
Flux in the Legacy Survey z-band (AB) |
FLUX_W1 |
float32 |
nanomaggy |
WISE flux in W1 (AB) |
FLUX_W2 |
float32 |
nanomaggy |
WISE flux in W2 (AB) |
FLUX_IVAR_G |
float32 |
nanomaggy^-2 |
Inverse variance of FLUX_G (AB) |
FLUX_IVAR_R |
float32 |
nanomaggy^-2 |
Inverse variance of FLUX_R (AB) |
FLUX_IVAR_Z |
float32 |
nanomaggy^-2 |
Inverse variance of FLUX_Z (AB) |
FLUX_IVAR_W1 |
float32 |
nanomaggy^-2 |
Inverse variance of FLUX_W1 (AB) |
FLUX_IVAR_W2 |
float32 |
nanomaggy^-2 |
Inverse variance of FLUX_W2 (AB) |
FIBERFLUX_G |
float32 |
nanomaggy |
Predicted g-band flux within a fiber of diameter 1.5 arcsec from this object in 1 arcsec Gaussian seeing |
FIBERFLUX_R |
float32 |
nanomaggy |
Predicted r-band flux within a fiber of diameter 1.5 arcsec from this object in 1 arcsec Gaussian seeing |
FIBERFLUX_Z |
float32 |
nanomaggy |
Predicted z-band flux within a fiber of diameter 1.5 arcsec from this object in 1 arcsec Gaussian seeing |
FIBERTOTFLUX_G |
float32 |
nanomaggy |
Predicted g-band flux within a fiber of diameter 1.5 arcsec from all sources at this location in 1 arcsec Gaussian seeing |
FIBERTOTFLUX_R |
float32 |
nanomaggy |
Predicted r-band flux within a fiber of diameter 1.5 arcsec from all sources at this location in 1 arcsec Gaussian seeing |
FIBERTOTFLUX_Z |
float32 |
nanomaggy |
Predicted z-band flux within a fiber of diameter 1.5 arcsec from all sources at this location in 1 arcsec Gaussian seeing |
MASKBITS |
int16 |
Bitwise mask from the imaging indicating potential issue or blending |
|
SERSIC |
float32 |
Power-law index for the Sersic profile model (MORPHTYPE=SER) |
|
SHAPE_R |
float32 |
arcsec |
Half-light radius of galaxy model (>0) |
SHAPE_E1 |
float32 |
Ellipticity component 1 of galaxy model for galaxy type MORPHTYPE |
|
SHAPE_E2 |
float32 |
Ellipticity component 2 of galaxy model for galaxy type MORPHTYPE |
|
REF_ID |
int64 |
Tyc1*1,000,000+Tyc2*10+Tyc3 for Tycho-2; sourceid for Gaia DR2 |
|
REF_CAT |
char[2] |
Reference catalog source for star: T2 for Tycho-2, G2 for Gaia DR2, L2 for the SGA, empty otherwise |
|
GAIA_PHOT_G_MEAN_MAG |
float32 |
mag |
Gaia G band magnitude |
GAIA_PHOT_BP_MEAN_MAG |
float32 |
mag |
Gaia BP band magnitude |
GAIA_PHOT_RP_MEAN_MAG |
float32 |
mag |
Gaia RP band magnitude |
PARALLAX |
float32 |
mas |
Reference catalog parallax |
PHOTSYS |
char[1] |
N for the MzLS/BASS photometric system, S for DECaLS |
|
PRIORITY_INIT |
int64 |
Target initial priority from target selection bitmasks and OBSCONDITIONS |
|
NUMOBS_INIT |
int64 |
Initial number of observations for target calculated across target selection bitmasks and OBSCONDITIONS |
|
SV3_DESI_TARGET |
int64 |
DESI (dark time program) target selection bitmask for SV3 |
|
SV3_BGS_TARGET |
int64 |
BGS (bright time program) target selection bitmask for SV3 |
|
SV3_MWS_TARGET |
int64 |
MWS (bright time program) target selection bitmask for SV3 |
|
SV3_SCND_TARGET |
int64 |
Secondary target selection bitmask for SV3 |
|
DESI_TARGET |
int64 |
DESI (dark time program) target selection bitmask |
|
BGS_TARGET |
int64 |
BGS (Bright Galaxy Survey) target selection bitmask |
|
MWS_TARGET |
int64 |
Milky Way Survey targeting bits |
|
PLATE_RA |
float64 |
deg |
Right Ascension to be used by PlateMaker |
PLATE_DEC |
float64 |
deg |
Declination to be used by PlateMaker |
COADD_NUMEXP |
int16 |
Number of exposures in coadd |
|
COADD_EXPTIME |
float32 |
s |
Summed exposure time for coadd |
COADD_NUMNIGHT |
int16 |
Number of nights in coadd |
|
COADD_NUMTILE |
int16 |
Number of tiles in coadd |
|
MEAN_DELTA_X |
float32 |
mm |
Mean (over exposures) fiber difference requested - actual CS5 X location on focal plane |
RMS_DELTA_X |
float32 |
mm |
RMS (over exposures) of the fiber difference between measured and requested CS5 X location on focal plane |
MEAN_DELTA_Y |
float32 |
mm |
Mean (over exposures) fiber difference requested - actual CS5 Y location on focal plane |
RMS_DELTA_Y |
float32 |
mm |
RMS (over exposures) of the fiber difference between measured and requested CS5 Y location on focal plane |
MEAN_FIBER_RA |
float64 |
deg |
Mean (over exposures) RA of actual fiber position |
STD_FIBER_RA |
float32 |
arcsec |
Standard deviation (over exposures) of RA of actual fiber position |
MEAN_FIBER_DEC |
float64 |
deg |
Mean (over exposures) DEC of actual fiber position |
STD_FIBER_DEC |
float32 |
arcsec |
Standard deviation (over exposures) of DEC of actual fiber position |
MEAN_PSF_TO_FIBER_SPECFLUX |
float32 |
Mean of input exposures fraction of light from point-like source captured by 1.5 arcsec diameter fiber given atmospheric seeing |
rvtab_coadd¶
- Summary:
RVspecfit measurements of coadded spectra in a given healpix.
- Naming Convention:
rvtab_coadd-sv3-bright-10016.fits, where this would be the file from sv3 survey in bright program in 10016 healpixel- File Type:
FITS, 61 KB This section gives the type of the file and its approximate size.
Contents¶
Number |
EXTNAME |
Type |
Contents |
|---|---|---|---|
IMAGE |
Empty HDU |
||
RVTAB |
BINTABLE |
RVSpecfit results |
|
FIBERMAP |
BINTABLE |
Information about objects inherited from targeting |
|
SCORES |
BINTABLE |
Information about spectra quality* |
|
EXP_FIBERMAP |
BINTABLE |
Fibermap corresponding to different exposures |
FITS Header Units¶
HDU0¶
Summarize the contents of this HDU.
Required Header Keywords¶
None
KEY |
Example Value |
Type |
Comment |
|---|---|---|---|
TMPLCON0 |
desi_b |
str |
Spec arm config name |
TMPLREV0 |
v211202 |
str |
Spec template revision |
TMPLSVR0 |
0.1.0.210117+devfee7ee |
str |
Spec template soft version |
TMPLCON1 |
desi_r |
str |
Spec arm config name |
TMPLREV1 |
v211202 |
str |
Spec template revision |
TMPLSVR1 |
0.1.0.210117+devfee7ee |
str |
Spec template soft version |
TMPLCON2 |
desi_z |
str |
Spec arm config name |
TMPLREV2 |
v211202 |
str |
Spec template revision |
TMPLSVR2 |
0.1.0.210117+devfee7ee |
str |
Spec template soft version |
RVS_CONF |
/global/cfs/cdirs/desi/science/mws/scripts/configs/config_211202.yaml |
str |
|
CHECKSUM |
XbH4YaG1XaG1XaG1 |
str |
HDU checksum updated 2022-03-13T17:03:18 |
DATASUM |
0 |
str |
data unit checksum updated 2022-03-13T17:03:18 |
Empty HDU.
HDU1¶
EXTNAME = RVTAB
The table of RVSpecfit measurements in a given healpixel.
Required Header Keywords¶
None
KEY |
Example Value |
Type |
Comment |
|---|---|---|---|
NAXIS1 |
231 |
int |
length of dimension 1 |
NAXIS2 |
7 |
int |
length of dimension 2 |
CHECKSUM |
cakocTjmcYjmcYjm |
str |
HDU checksum updated 2022-03-13T17:03:18 |
DATASUM |
2504015193 |
str |
data unit checksum updated 2022-03-13T17:03:18 |
Required Data Table Columns¶
Name |
Type |
Units |
Description |
|---|---|---|---|
VRAD |
float64 |
km s-1 |
Radial velocity |
VRAD_ERR |
float64 |
km s-1 |
Radial velocity error |
VRAD_SKEW |
float64 |
Radial velocity posterior skewness |
|
VRAD_KURT |
float64 |
Radial velocity posterior kurtosis |
|
LOGG |
float64 |
Log of surface gravity |
|
TEFF |
float64 |
K |
Effective temperature |
ALPHAFE |
float64 |
[alpha/Fe] from template fitting |
|
FEH |
float64 |
[Fe/H] from template fitting |
|
LOGG_ERR |
float64 |
Log of surface gravity uncertainty |
|
TEFF_ERR |
float64 |
K |
Effective temperature uncertainty |
ALPHAFE_ERR |
float64 |
[alpha/Fe] uncertainty from template fitting |
|
FEH_ERR |
float64 |
[Fe/H] uncertainty from template fitting |
|
VSINI |
float64 |
km s-1 |
Stellar rotation velocity |
NEXP |
int64 |
||
CHISQ_TOT |
float64 |
Total chi-square for all arms |
|
CHISQ_C_TOT |
float64 |
Total chi-square for all arms for polynomial only fit |
|
CHISQ_B |
float64 |
Chi-square in the B arm |
|
CHISQ_C_B |
float64 |
Chi-square in the B arm after fitting continuum only |
|
CHISQ_R |
float64 |
Chi-square in the R arm |
|
CHISQ_C_R |
float64 |
Chi-square in the R arm after fitting continuum only |
|
CHISQ_Z |
float64 |
Chi-square in the Z arm |
|
CHISQ_C_Z |
float64 |
Chi-square in the Z arm after fitting continuum only |
|
RVS_WARN |
int64 |
RVSpecFit warning flag |
|
REF_ID |
int64 |
Tyc1*1,000,000+Tyc2*10+Tyc3 for Tycho-2; sourceid for Gaia DR2 |
|
REF_CAT |
char[2] |
Reference catalog source for star: T2 for Tycho-2, G2 for Gaia DR2, L2 for the SGA, empty otherwise |
|
TARGET_RA |
float64 |
deg |
Target right ascension |
TARGET_DEC |
float64 |
deg |
Target declination |
TARGETID |
int64 |
Unique DESI target ID |
|
SN_B |
float32 |
Median S/N in the B arm |
|
SN_R |
float32 |
Median S/N in the R arm |
|
SN_Z |
float32 |
Median S/N in the Z arm |
|
SUCCESS |
logical |
Did we succeed or fail |
HDU2¶
EXTNAME = FIBERMAP
Information about objects inherited from targeting
Required Header Keywords¶
None
KEY |
Example Value |
Type |
Comment |
|---|---|---|---|
NAXIS1 |
341 |
int |
length of dimension 1 |
NAXIS2 |
7 |
int |
length of dimension 2 |
CHECKSUM |
eMIggKIfeKIfeKIf |
str |
HDU checksum updated 2022-03-13T17:03:18 |
DATASUM |
19021304 |
str |
data unit checksum updated 2022-03-13T17:03:18 |
Required Data Table Columns¶
Name |
Type |
Units |
Description |
|---|---|---|---|
TARGETID |
int64 |
Unique DESI target ID |
|
COADD_FIBERSTATUS |
int32 |
bitwise-AND of input FIBERSTATUS |
|
TARGET_RA |
float64 |
deg |
Target right ascension |
TARGET_DEC |
float64 |
deg |
Target declination |
PMRA |
float32 |
mas yr^-1 |
proper motion in the +RA direction (already including cos(dec)) |
PMDEC |
float32 |
mas yr^-1 |
Proper motion in the +Dec direction |
REF_EPOCH |
float32 |
yr |
Reference epoch for Gaia/Tycho astrometry. Typically 2015.5 for Gaia |
FA_TARGET |
int64 |
Targeting bit internally used by fiberassign (linked with FA_TYPE) |
|
FA_TYPE |
binary |
Fiberassign internal target type (science, standard, sky, safe, suppsky) |
|
OBJTYPE |
char[3] |
Object type: TGT, SKY, NON, BAD |
|
SUBPRIORITY |
float64 |
Random subpriority [0-1) to break assignment ties |
|
OBSCONDITIONS |
int32 |
Bitmask of allowed observing conditions |
|
RELEASE |
int16 |
Imaging surveys release ID |
|
BRICKNAME |
char[8] |
Brick name from tractor input |
|
BRICKID |
int32 |
Brick ID from tractor input |
|
BRICK_OBJID |
int32 |
Imaging Surveys OBJID on that brick |
|
MORPHTYPE |
char[4] |
Imaging Surveys morphological type from Tractor |
|
EBV |
float32 |
mag |
Galactic extinction E(B-V) reddening from SFD98 |
FLUX_G |
float32 |
nanomaggy |
Flux in the Legacy Survey g-band (AB) |
FLUX_R |
float32 |
nanomaggy |
Flux in the Legacy Survey r-band (AB) |
FLUX_Z |
float32 |
nanomaggy |
Flux in the Legacy Survey z-band (AB) |
FLUX_W1 |
float32 |
nanomaggy |
WISE flux in W1 (AB) |
FLUX_W2 |
float32 |
nanomaggy |
WISE flux in W2 (AB) |
FLUX_IVAR_G |
float32 |
nanomaggy^-2 |
Inverse variance of FLUX_G (AB) |
FLUX_IVAR_R |
float32 |
nanomaggy^-2 |
Inverse variance of FLUX_R (AB) |
FLUX_IVAR_Z |
float32 |
nanomaggy^-2 |
Inverse variance of FLUX_Z (AB) |
FLUX_IVAR_W1 |
float32 |
nanomaggy^-2 |
Inverse variance of FLUX_W1 (AB) |
FLUX_IVAR_W2 |
float32 |
nanomaggy^-2 |
Inverse variance of FLUX_W2 (AB) |
FIBERFLUX_G |
float32 |
nanomaggy |
Predicted g-band flux within a fiber of diameter 1.5 arcsec from this object in 1 arcsec Gaussian seeing |
FIBERFLUX_R |
float32 |
nanomaggy |
Predicted r-band flux within a fiber of diameter 1.5 arcsec from this object in 1 arcsec Gaussian seeing |
FIBERFLUX_Z |
float32 |
nanomaggy |
Predicted z-band flux within a fiber of diameter 1.5 arcsec from this object in 1 arcsec Gaussian seeing |
FIBERTOTFLUX_G |
float32 |
nanomaggy |
Predicted g-band flux within a fiber of diameter 1.5 arcsec from all sources at this location in 1 arcsec Gaussian seeing |
FIBERTOTFLUX_R |
float32 |
nanomaggy |
Predicted r-band flux within a fiber of diameter 1.5 arcsec from all sources at this location in 1 arcsec Gaussian seeing |
FIBERTOTFLUX_Z |
float32 |
nanomaggy |
Predicted z-band flux within a fiber of diameter 1.5 arcsec from all sources at this location in 1 arcsec Gaussian seeing |
MASKBITS |
int16 |
Bitwise mask from the imaging indicating potential issue or blending |
|
SERSIC |
float32 |
Power-law index for the Sersic profile model (MORPHTYPE=SER) |
|
SHAPE_R |
float32 |
arcsec |
Half-light radius of galaxy model (>0) |
SHAPE_E1 |
float32 |
Ellipticity component 1 of galaxy model for galaxy type MORPHTYPE |
|
SHAPE_E2 |
float32 |
Ellipticity component 2 of galaxy model for galaxy type MORPHTYPE |
|
REF_ID |
int64 |
Tyc1*1,000,000+Tyc2*10+Tyc3 for Tycho-2; sourceid for Gaia DR2 |
|
REF_CAT |
char[2] |
Reference catalog source for star: T2 for Tycho-2, G2 for Gaia DR2, L2 for the SGA, empty otherwise |
|
GAIA_PHOT_G_MEAN_MAG |
float32 |
mag |
Gaia G band magnitude |
GAIA_PHOT_BP_MEAN_MAG |
float32 |
mag |
Gaia BP band magnitude |
GAIA_PHOT_RP_MEAN_MAG |
float32 |
mag |
Gaia RP band magnitude |
PARALLAX |
float32 |
mas |
Reference catalog parallax |
PHOTSYS |
char[1] |
N for the MzLS/BASS photometric system, S for DECaLS |
|
PRIORITY_INIT |
int64 |
Target initial priority from target selection bitmasks and OBSCONDITIONS |
|
NUMOBS_INIT |
int64 |
Initial number of observations for target calculated across target selection bitmasks and OBSCONDITIONS |
|
SV3_DESI_TARGET |
int64 |
DESI (dark time program) target selection bitmask for SV3 |
|
SV3_BGS_TARGET |
int64 |
BGS (bright time program) target selection bitmask for SV3 |
|
SV3_MWS_TARGET |
int64 |
MWS (bright time program) target selection bitmask for SV3 |
|
SV3_SCND_TARGET |
int64 |
Secondary target selection bitmask for SV3 |
|
DESI_TARGET |
int64 |
DESI (dark time program) target selection bitmask |
|
BGS_TARGET |
int64 |
BGS (Bright Galaxy Survey) target selection bitmask |
|
MWS_TARGET |
int64 |
Milky Way Survey targeting bits |
|
PLATE_RA |
float64 |
deg |
Right Ascension to be used by PlateMaker |
PLATE_DEC |
float64 |
deg |
Declination to be used by PlateMaker |
COADD_NUMEXP |
int16 |
Number of exposures in coadd |
|
COADD_EXPTIME |
float32 |
s |
Summed exposure time for coadd |
COADD_NUMNIGHT |
int16 |
Number of nights in coadd |
|
COADD_NUMTILE |
int16 |
Number of tiles in coadd |
|
MEAN_DELTA_X |
float32 |
mm |
Mean (over exposures) fiber difference requested - actual CS5 X location on focal plane |
RMS_DELTA_X |
float32 |
mm |
RMS (over exposures) of the fiber difference between measured and requested CS5 X location on focal plane |
MEAN_DELTA_Y |
float32 |
mm |
Mean (over exposures) fiber difference requested - actual CS5 Y location on focal plane |
RMS_DELTA_Y |
float32 |
mm |
RMS (over exposures) of the fiber difference between measured and requested CS5 Y location on focal plane |
MEAN_FIBER_RA |
float64 |
deg |
Mean (over exposures) RA of actual fiber position |
STD_FIBER_RA |
float32 |
arcsec |
Standard deviation (over exposures) of RA of actual fiber position |
MEAN_FIBER_DEC |
float64 |
deg |
Mean (over exposures) DEC of actual fiber position |
STD_FIBER_DEC |
float32 |
arcsec |
Standard deviation (over exposures) of DEC of actual fiber position |
MEAN_PSF_TO_FIBER_SPECFLUX |
float32 |
Mean of input exposures fraction of light from point-like source captured by 1.5 arcsec diameter fiber given atmospheric seeing |
HDU3¶
EXTNAME = SCORES
Information about spectra quality
Required Header Keywords¶
None
KEY |
Example Value |
Type |
Comment |
|---|---|---|---|
NAXIS1 |
172 |
int |
length of dimension 1 |
NAXIS2 |
7 |
int |
length of dimension 2 |
CHECKSUM |
XMRcaJOaRJOaXJOa |
str |
HDU checksum updated 2022-03-13T17:03:18 |
DATASUM |
118963768 |
str |
data unit checksum updated 2022-03-13T17:03:18 |
Required Data Table Columns¶
Name |
Type |
Units |
Description |
|---|---|---|---|
TARGETID |
int64 |
Unique DESI target ID |
|
INTEG_COADD_FLUX_B |
float32 |
||
MEDIAN_COADD_FLUX_B |
float32 |
||
MEDIAN_COADD_SNR_B |
float32 |
||
INTEG_COADD_FLUX_R |
float32 |
||
MEDIAN_COADD_FLUX_R |
float32 |
||
MEDIAN_COADD_SNR_R |
float32 |
||
INTEG_COADD_FLUX_Z |
float32 |
||
MEDIAN_COADD_FLUX_Z |
float32 |
||
MEDIAN_COADD_SNR_Z |
float32 |
||
TSNR2_GPBDARK_B |
float32 |
||
TSNR2_ELG_B |
float32 |
ELG B template (S/N)^2 |
|
TSNR2_GPBBRIGHT_B |
float32 |
||
TSNR2_LYA_B |
float32 |
LYA B template (S/N)^2 |
|
TSNR2_BGS_B |
float32 |
BGS B template (S/N)^2 |
|
TSNR2_GPBBACKUP_B |
float32 |
||
TSNR2_QSO_B |
float32 |
QSO B template (S/N)^2 |
|
TSNR2_LRG_B |
float32 |
LRG B template (S/N)^2 |
|
TSNR2_GPBDARK_R |
float32 |
||
TSNR2_ELG_R |
float32 |
ELG R template (S/N)^2 |
|
TSNR2_GPBBRIGHT_R |
float32 |
||
TSNR2_LYA_R |
float32 |
LYA R template (S/N)^2 |
|
TSNR2_BGS_R |
float32 |
BGS R template (S/N)^2 |
|
TSNR2_GPBBACKUP_R |
float32 |
||
TSNR2_QSO_R |
float32 |
QSO R template (S/N)^2 |
|
TSNR2_LRG_R |
float32 |
LRG R template (S/N)^2 |
|
TSNR2_GPBDARK_Z |
float32 |
||
TSNR2_ELG_Z |
float32 |
ELG Z template (S/N)^2 |
|
TSNR2_GPBBRIGHT_Z |
float32 |
||
TSNR2_LYA_Z |
float32 |
LYA Z template (S/N)^2 |
|
TSNR2_BGS_Z |
float32 |
BGS Z template (S/N)^2 |
|
TSNR2_GPBBACKUP_Z |
float32 |
||
TSNR2_QSO_Z |
float32 |
QSO Z template (S/N)^2 |
|
TSNR2_LRG_Z |
float32 |
LRG Z template (S/N)^2 |
|
TSNR2_GPBDARK |
float32 |
||
TSNR2_ELG |
float32 |
ELG template (S/N)^2 summed over B,R,Z |
|
TSNR2_GPBBRIGHT |
float32 |
||
TSNR2_LYA |
float32 |
LYA template (S/N)^2 summed over B,R,Z |
|
TSNR2_BGS |
float32 |
BGS template (S/N)^2 summed over B,R,Z |
|
TSNR2_GPBBACKUP |
float32 |
||
TSNR2_QSO |
float32 |
QSO template (S/N)^2 summed over B,R,Z |
|
TSNR2_LRG |
float32 |
LRG template (S/N)^2 summed over B,R,Z |
HDU4¶
EXTNAME = EXP_FIBERMAP
The fibermap records corresponding to individual exposures that went into the stack
Required Header Keywords¶
None
KEY |
Example Value |
Type |
Comment |
|---|---|---|---|
NAXIS1 |
162 |
int |
length of dimension 1 |
NAXIS2 |
24 |
int |
length of dimension 2 |
CHECKSUM |
1TAb3T4Z1T9b1T9Z |
str |
HDU checksum updated 2022-03-13T17:03:18 |
DATASUM |
672476038 |
str |
data unit checksum updated 2022-03-13T17:03:18 |
Required Data Table Columns¶
Name |
Type |
Units |
Description |
|---|---|---|---|
TARGETID |
int64 |
Unique DESI target ID |
|
PRIORITY |
int32 |
Target current priority |
|
SUBPRIORITY |
float64 |
Random subpriority [0-1) to break assignment ties |
|
NIGHT |
int32 |
||
EXPID |
int32 |
DESI Exposure ID number |
|
MJD |
float64 |
Modified Julian Date when shutter was opened for this exposure |
|
TILEID |
int32 |
Unique DESI tile ID |
|
EXPTIME |
float64 |
s |
Length of time shutter was open |
PETAL_LOC |
int16 |
Petal location [0-9] |
|
DEVICE_LOC |
int32 |
Device location on focal plane [0-523] |
|
LOCATION |
int64 |
Location on the focal plane PETAL_LOC*1000 + DEVICE_LOC |
|
FIBER |
int32 |
Fiber ID on the CCDs [0-4999] |
|
FIBERSTATUS |
int32 |
Fiber status mask. 0=good |
|
FIBERASSIGN_X |
float32 |
mm |
Fiberassign expected CS5 X location on focal plane |
FIBERASSIGN_Y |
float32 |
mm |
Fiberassign expected CS5 Y location on focal plane |
LAMBDA_REF |
float32 |
Angstrom |
Requested wavelength at which targets should be centered on fibers |
PLATE_RA |
float64 |
deg |
Right Ascension to be used by PlateMaker |
PLATE_DEC |
float64 |
deg |
Declination to be used by PlateMaker |
NUM_ITER |
int64 |
Number of positioner iterations |
|
FIBER_X |
float64 |
mm |
CS5 X location requested by PlateMaker |
FIBER_Y |
float64 |
mm |
CS5 Y location requested by PlateMaker |
DELTA_X |
float64 |
mm |
CS5 X requested minus actual position |
DELTA_Y |
float64 |
mm |
CS5 Y requested minus actual position |
FIBER_RA |
float64 |
deg |
RA of actual fiber position |
FIBER_DEC |
float64 |
deg |
DEC of actual fiber position |
PSF_TO_FIBER_SPECFLUX |
float64 |
fraction of light from point-like source captured by 1.5 arcsec diameter fiber given atmospheric seeing |
rvpix¶
- Summary:
RVSpecfit measurements from coadded measurements in different surveys, programs.
- Naming Convention:
rvpix-{SURVEY}-{PROGRAM}.fits, where survey is sv1, sv2.. program is dark, bright, …- File Type:
FITS, 1 MB
Contents¶
Number |
EXTNAME |
Type |
Contents |
|---|---|---|---|
IMAGE |
Empty HDU |
||
RVTAB |
BINTABLE |
RVSpecfit results |
|
FIBERMAP |
BINTABLE |
Information about objects inherited from targeting |
|
SCORES |
BINTABLE |
Information about spectra quality |
|
GAIA |
BINTABLE |
Gaia crossmatch |
FITS Header Units¶
HDU0¶
Empty HDU.
HDU1¶
EXTNAME = RVTAB
This is table of measurements by RVSpecfit of coadded DESI spectra for a given survey/program.
Required Header Keywords¶
None
KEY |
Example Value |
Type |
Comment |
|---|---|---|---|
NAXIS1 |
253 |
int |
length of dimension 1 |
NAXIS2 |
728 |
int |
length of dimension 2 |
CHECKSUM |
6AYU89YT6AYT67YT |
str |
|
DATASUM |
3901465357 |
str |
Required Data Table Columns¶
Name |
Type |
Units |
Description |
|---|---|---|---|
VRAD |
float64 |
km s-1 |
Radial velocity |
VRAD_ERR |
float64 |
km s-1 |
Radial velocity error |
VRAD_SKEW |
float64 |
Radial velocity posterior skewness |
|
VRAD_KURT |
float64 |
Radial velocity posterior kurtosis |
|
LOGG |
float64 |
Log of surface gravity |
|
TEFF |
float64 |
K |
Effective temperature |
ALPHAFE |
float64 |
[alpha/Fe] from template fitting |
|
FEH |
float64 |
[Fe/H] from template fitting |
|
LOGG_ERR |
float64 |
Log of surface gravity uncertainty |
|
TEFF_ERR |
float64 |
K |
Effective temperature uncertainty |
ALPHAFE_ERR |
float64 |
[alpha/Fe] uncertainty from template fitting |
|
FEH_ERR |
float64 |
[Fe/H] uncertainty from template fitting |
|
VSINI |
float64 |
km s-1 |
Stellar rotation velocity |
NEXP |
int64 |
||
CHISQ_TOT |
float64 |
Total chi-square for all arms |
|
CHISQ_C_TOT |
float64 |
Total chi-square for all arms for polynomial only fit |
|
CHISQ_B |
float64 |
Chi-square in the B arm |
|
CHISQ_C_B |
float64 |
Chi-square in the B arm after fitting continuum only |
|
CHISQ_R |
float64 |
Chi-square in the R arm |
|
CHISQ_C_R |
float64 |
Chi-square in the R arm after fitting continuum only |
|
CHISQ_Z |
float64 |
Chi-square in the Z arm |
|
CHISQ_C_Z |
float64 |
Chi-square in the Z arm after fitting continuum only |
|
RVS_WARN |
int64 |
RVSpecFit warning flag |
|
REF_ID |
int64 |
Tyc1*1,000,000+Tyc2*10+Tyc3 for Tycho-2; sourceid for Gaia DR2 |
|
REF_CAT |
char[2] |
Reference catalog source for star: T2 for Tycho-2, G2 for Gaia DR2, L2 for the SGA, empty otherwise |
|
TARGET_RA |
float64 |
deg |
Target right ascension |
TARGET_DEC |
float64 |
deg |
Target declination |
TARGETID |
int64 |
Unique DESI target ID |
|
SN_B |
float32 |
Median S/N in the B arm |
|
SN_R |
float32 |
Median S/N in the R arm |
|
SN_Z |
float32 |
Median S/N in the Z arm |
|
SUCCESS |
logical |
Did we succeed or fail |
|
HEALPIX |
int64 |
HEALPixel containing this location at NSIDE=64 in the NESTED scheme |
|
RR_Z |
float64 |
Redrock redshift |
|
RR_SPECTYPE |
char[6] |
Redrock spectroscopic type |
HDU2¶
EXTNAME = FIBERMAP
FIBERMAP table with information on individual targets copied from original coadd file.
Required Header Keywords¶
None
KEY |
Example Value |
Type |
Comment |
|---|---|---|---|
NAXIS1 |
317 |
int |
length of dimension 1 |
NAXIS2 |
728 |
int |
length of dimension 2 |
Required Data Table Columns¶
Name |
Type |
Units |
Description |
|---|---|---|---|
TARGETID |
int64 |
Unique DESI target ID |
|
COADD_FIBERSTATUS |
int32 |
bitwise-AND of input FIBERSTATUS |
|
TARGET_RA |
float64 |
deg |
Target right ascension |
TARGET_DEC |
float64 |
deg |
Target declination |
PMRA |
float32 |
mas yr^-1 |
proper motion in the +RA direction (already including cos(dec)) |
PMDEC |
float32 |
mas yr^-1 |
Proper motion in the +Dec direction |
REF_EPOCH |
float32 |
yr |
Reference epoch for Gaia/Tycho astrometry. Typically 2015.5 for Gaia |
FA_TARGET |
int64 |
Targeting bit internally used by fiberassign (linked with FA_TYPE) |
|
FA_TYPE |
binary |
Fiberassign internal target type (science, standard, sky, safe, suppsky) |
|
OBJTYPE |
char[3] |
Object type: TGT, SKY, NON, BAD |
|
SUBPRIORITY |
float64 |
Random subpriority [0-1) to break assignment ties |
|
OBSCONDITIONS |
int32 |
Bitmask of allowed observing conditions |
|
RELEASE |
int16 |
Imaging surveys release ID |
|
BRICKNAME |
char[8] |
Brick name from tractor input |
|
BRICKID |
int32 |
Brick ID from tractor input |
|
BRICK_OBJID |
int32 |
Imaging Surveys OBJID on that brick |
|
MORPHTYPE |
char[4] |
Imaging Surveys morphological type from Tractor |
|
EBV |
float32 |
mag |
Galactic extinction E(B-V) reddening from SFD98 |
FLUX_G |
float32 |
nanomaggy |
Flux in the Legacy Survey g-band (AB) |
FLUX_R |
float32 |
nanomaggy |
Flux in the Legacy Survey r-band (AB) |
FLUX_Z |
float32 |
nanomaggy |
Flux in the Legacy Survey z-band (AB) |
FLUX_W1 |
float32 |
nanomaggy |
WISE flux in W1 (AB) |
FLUX_W2 |
float32 |
nanomaggy |
WISE flux in W2 (AB) |
FLUX_IVAR_G |
float32 |
nanomaggy^-2 |
Inverse variance of FLUX_G (AB) |
FLUX_IVAR_R |
float32 |
nanomaggy^-2 |
Inverse variance of FLUX_R (AB) |
FLUX_IVAR_Z |
float32 |
nanomaggy^-2 |
Inverse variance of FLUX_Z (AB) |
FLUX_IVAR_W1 |
float32 |
nanomaggy^-2 |
Inverse variance of FLUX_W1 (AB) |
FLUX_IVAR_W2 |
float32 |
nanomaggy^-2 |
Inverse variance of FLUX_W2 (AB) |
FIBERFLUX_G |
float32 |
nanomaggy |
Predicted g-band flux within a fiber of diameter 1.5 arcsec from this object in 1 arcsec Gaussian seeing |
FIBERFLUX_R |
float32 |
nanomaggy |
Predicted r-band flux within a fiber of diameter 1.5 arcsec from this object in 1 arcsec Gaussian seeing |
FIBERFLUX_Z |
float32 |
nanomaggy |
Predicted z-band flux within a fiber of diameter 1.5 arcsec from this object in 1 arcsec Gaussian seeing |
FIBERTOTFLUX_G |
float32 |
nanomaggy |
Predicted g-band flux within a fiber of diameter 1.5 arcsec from all sources at this location in 1 arcsec Gaussian seeing |
FIBERTOTFLUX_R |
float32 |
nanomaggy |
Predicted r-band flux within a fiber of diameter 1.5 arcsec from all sources at this location in 1 arcsec Gaussian seeing |
FIBERTOTFLUX_Z |
float32 |
nanomaggy |
Predicted z-band flux within a fiber of diameter 1.5 arcsec from all sources at this location in 1 arcsec Gaussian seeing |
MASKBITS |
int16 |
Bitwise mask from the imaging indicating potential issue or blending |
|
SERSIC |
float32 |
Power-law index for the Sersic profile model (MORPHTYPE=SER) |
|
SHAPE_R |
float32 |
arcsec |
Half-light radius of galaxy model (>0) |
SHAPE_E1 |
float32 |
Ellipticity component 1 of galaxy model for galaxy type MORPHTYPE |
|
SHAPE_E2 |
float32 |
Ellipticity component 2 of galaxy model for galaxy type MORPHTYPE |
|
REF_ID |
int64 |
Tyc1*1,000,000+Tyc2*10+Tyc3 for Tycho-2; sourceid for Gaia DR2 |
|
REF_CAT |
char[2] |
Reference catalog source for star: T2 for Tycho-2, G2 for Gaia DR2, L2 for the SGA, empty otherwise |
|
GAIA_PHOT_G_MEAN_MAG |
float32 |
mag |
Gaia G band magnitude |
GAIA_PHOT_BP_MEAN_MAG |
float32 |
mag |
Gaia BP band magnitude |
GAIA_PHOT_RP_MEAN_MAG |
float32 |
mag |
Gaia RP band magnitude |
PARALLAX |
float32 |
mas |
Reference catalog parallax |
PHOTSYS |
char[1] |
N for the MzLS/BASS photometric system, S for DECaLS |
|
PRIORITY_INIT |
int64 |
Target initial priority from target selection bitmasks and OBSCONDITIONS |
|
NUMOBS_INIT |
int64 |
Initial number of observations for target calculated across target selection bitmasks and OBSCONDITIONS |
|
CMX_TARGET |
int64 |
Target selection bitmask for commissioning |
|
DESI_TARGET |
int64 |
DESI (dark time program) target selection bitmask |
|
BGS_TARGET |
int64 |
BGS (Bright Galaxy Survey) target selection bitmask |
|
MWS_TARGET |
int64 |
Milky Way Survey targeting bits |
|
PLATE_RA |
float64 |
deg |
Right Ascension to be used by PlateMaker |
PLATE_DEC |
float64 |
deg |
Declination to be used by PlateMaker |
COADD_NUMEXP |
int16 |
Number of exposures in coadd |
|
COADD_EXPTIME |
float32 |
s |
Summed exposure time for coadd |
COADD_NUMNIGHT |
int16 |
Number of nights in coadd |
|
COADD_NUMTILE |
int16 |
Number of tiles in coadd |
|
MEAN_DELTA_X |
float32 |
mm |
Mean (over exposures) fiber difference requested - actual CS5 X location on focal plane |
RMS_DELTA_X |
float32 |
mm |
RMS (over exposures) of the fiber difference between measured and requested CS5 X location on focal plane |
MEAN_DELTA_Y |
float32 |
mm |
Mean (over exposures) fiber difference requested - actual CS5 Y location on focal plane |
RMS_DELTA_Y |
float32 |
mm |
RMS (over exposures) of the fiber difference between measured and requested CS5 Y location on focal plane |
MEAN_FIBER_RA |
float64 |
deg |
Mean (over exposures) RA of actual fiber position |
STD_FIBER_RA |
float32 |
arcsec |
Standard deviation (over exposures) of RA of actual fiber position |
MEAN_FIBER_DEC |
float64 |
deg |
Mean (over exposures) DEC of actual fiber position |
STD_FIBER_DEC |
float32 |
arcsec |
Standard deviation (over exposures) of DEC of actual fiber position |
MEAN_PSF_TO_FIBER_SPECFLUX |
float32 |
Mean of input exposures fraction of light from point-like source captured by 1.5 arcsec diameter fiber given atmospheric seeing |
HDU3¶
EXTNAME = SCORES
The table with various quality information about spectra.
Required Header Keywords¶
None
KEY |
Example Value |
Type |
Comment |
|---|---|---|---|
NAXIS1 |
172 |
int |
length of dimension 1 |
NAXIS2 |
728 |
int |
length of dimension 2 |
Required Data Table Columns¶
Name |
Type |
Units |
Description |
|---|---|---|---|
TARGETID |
int64 |
Unique DESI target ID |
|
INTEG_COADD_FLUX_B |
float32 |
||
MEDIAN_COADD_FLUX_B |
float32 |
||
MEDIAN_COADD_SNR_B |
float32 |
||
INTEG_COADD_FLUX_R |
float32 |
||
MEDIAN_COADD_FLUX_R |
float32 |
||
MEDIAN_COADD_SNR_R |
float32 |
||
INTEG_COADD_FLUX_Z |
float32 |
||
MEDIAN_COADD_FLUX_Z |
float32 |
||
MEDIAN_COADD_SNR_Z |
float32 |
||
TSNR2_GPBDARK_B |
float32 |
||
TSNR2_ELG_B |
float32 |
ELG B template (S/N)^2 |
|
TSNR2_GPBBRIGHT_B |
float32 |
||
TSNR2_LYA_B |
float32 |
LYA B template (S/N)^2 |
|
TSNR2_BGS_B |
float32 |
BGS B template (S/N)^2 |
|
TSNR2_GPBBACKUP_B |
float32 |
||
TSNR2_QSO_B |
float32 |
QSO B template (S/N)^2 |
|
TSNR2_LRG_B |
float32 |
LRG B template (S/N)^2 |
|
TSNR2_GPBDARK_R |
float32 |
||
TSNR2_ELG_R |
float32 |
ELG R template (S/N)^2 |
|
TSNR2_GPBBRIGHT_R |
float32 |
||
TSNR2_LYA_R |
float32 |
LYA R template (S/N)^2 |
|
TSNR2_BGS_R |
float32 |
BGS R template (S/N)^2 |
|
TSNR2_GPBBACKUP_R |
float32 |
||
TSNR2_QSO_R |
float32 |
QSO R template (S/N)^2 |
|
TSNR2_LRG_R |
float32 |
LRG R template (S/N)^2 |
|
TSNR2_GPBDARK_Z |
float32 |
||
TSNR2_ELG_Z |
float32 |
ELG Z template (S/N)^2 |
|
TSNR2_GPBBRIGHT_Z |
float32 |
||
TSNR2_LYA_Z |
float32 |
LYA Z template (S/N)^2 |
|
TSNR2_BGS_Z |
float32 |
BGS Z template (S/N)^2 |
|
TSNR2_GPBBACKUP_Z |
float32 |
||
TSNR2_QSO_Z |
float32 |
QSO Z template (S/N)^2 |
|
TSNR2_LRG_Z |
float32 |
LRG Z template (S/N)^2 |
|
TSNR2_GPBDARK |
float32 |
||
TSNR2_ELG |
float32 |
ELG template (S/N)^2 summed over B,R,Z |
|
TSNR2_GPBBRIGHT |
float32 |
||
TSNR2_LYA |
float32 |
LYA template (S/N)^2 summed over B,R,Z |
|
TSNR2_BGS |
float32 |
BGS template (S/N)^2 summed over B,R,Z |
|
TSNR2_GPBBACKUP |
float32 |
||
TSNR2_QSO |
float32 |
QSO template (S/N)^2 summed over B,R,Z |
|
TSNR2_LRG |
float32 |
LRG template (S/N)^2 summed over B,R,Z |
HDU4¶
EXTNAME = GAIA
The Gaia DR3 measurements for each object in the catalog.
Required Header Keywords¶
None
KEY |
Example Value |
Type |
Comment |
|---|---|---|---|
NAXIS1 |
632 |
int |
length of dimension 1 |
NAXIS2 |
728 |
int |
length of dimension 2 |
Required Data Table Columns¶
Name |
Type |
Units |
Description |
|---|---|---|---|
SOLUTION_ID |
int64 |
||
DESIGNATION |
char[20] |
||
SOURCE_ID |
int64 |
||
RANDOM_INDEX |
int64 |
||
REF_EPOCH |
float64 |
yr |
Reference epoch for Gaia/Tycho astrometry. Typically 2015.5 for Gaia |
RA |
float64 |
deg |
Target Right Ascension |
RA_ERROR |
float32 |
||
DEC |
float64 |
deg |
Target declination |
DEC_ERROR |
float32 |
||
PARALLAX |
float64 |
mas |
Reference catalog parallax |
PARALLAX_ERROR |
float32 |
||
PARALLAX_OVER_ERROR |
float32 |
||
PM |
float32 |
||
PMRA |
float64 |
mas yr^-1 |
proper motion in the +RA direction (already including cos(dec)) |
PMRA_ERROR |
float32 |
||
PMDEC |
float64 |
mas yr^-1 |
Proper motion in the +Dec direction |
PMDEC_ERROR |
float32 |
||
RA_DEC_CORR |
float32 |
||
RA_PARALLAX_CORR |
float32 |
||
RA_PMRA_CORR |
float32 |
||
RA_PMDEC_CORR |
float32 |
||
DEC_PARALLAX_CORR |
float32 |
||
DEC_PMRA_CORR |
float32 |
||
DEC_PMDEC_CORR |
float32 |
||
PARALLAX_PMRA_CORR |
float32 |
||
PARALLAX_PMDEC_CORR |
float32 |
||
PMRA_PMDEC_CORR |
float32 |
||
ASTROMETRIC_N_OBS_AL |
int16 |
||
ASTROMETRIC_N_OBS_AC |
int16 |
||
ASTROMETRIC_N_GOOD_OBS_AL |
int16 |
||
ASTROMETRIC_N_BAD_OBS_AL |
int16 |
||
ASTROMETRIC_GOF_AL |
float32 |
||
ASTROMETRIC_CHI2_AL |
float32 |
||
ASTROMETRIC_EXCESS_NOISE |
float32 |
||
ASTROMETRIC_EXCESS_NOISE_SIG |
float32 |
||
ASTROMETRIC_PARAMS_SOLVED |
int16 |
||
ASTROMETRIC_PRIMARY_FLAG |
logical |
||
NU_EFF_USED_IN_ASTROMETRY |
float32 |
||
PSEUDOCOLOUR |
float32 |
||
PSEUDOCOLOUR_ERROR |
float32 |
||
RA_PSEUDOCOLOUR_CORR |
float32 |
||
DEC_PSEUDOCOLOUR_CORR |
float32 |
||
PARALLAX_PSEUDOCOLOUR_CORR |
float32 |
||
PMRA_PSEUDOCOLOUR_CORR |
float32 |
||
PMDEC_PSEUDOCOLOUR_CORR |
float32 |
||
ASTROMETRIC_MATCHED_TRANSITS |
int16 |
||
VISIBILITY_PERIODS_USED |
int16 |
||
ASTROMETRIC_SIGMA5D_MAX |
float32 |
||
MATCHED_TRANSITS |
int16 |
||
NEW_MATCHED_TRANSITS |
int16 |
||
MATCHED_TRANSITS_REMOVED |
int16 |
||
IPD_GOF_HARMONIC_AMPLITUDE |
float32 |
||
IPD_GOF_HARMONIC_PHASE |
float32 |
||
IPD_FRAC_MULTI_PEAK |
int16 |
||
IPD_FRAC_ODD_WIN |
int16 |
||
RUWE |
float32 |
||
SCAN_DIRECTION_STRENGTH_K1 |
float32 |
||
SCAN_DIRECTION_STRENGTH_K2 |
float32 |
||
SCAN_DIRECTION_STRENGTH_K3 |
float32 |
||
SCAN_DIRECTION_STRENGTH_K4 |
float32 |
||
SCAN_DIRECTION_MEAN_K1 |
float32 |
||
SCAN_DIRECTION_MEAN_K2 |
float32 |
||
SCAN_DIRECTION_MEAN_K3 |
float32 |
||
SCAN_DIRECTION_MEAN_K4 |
float32 |
||
DUPLICATED_SOURCE |
logical |
||
PHOT_G_N_OBS |
int16 |
||
PHOT_G_MEAN_FLUX |
float64 |
||
PHOT_G_MEAN_FLUX_ERROR |
float32 |
||
PHOT_G_MEAN_FLUX_OVER_ERROR |
float32 |
||
PHOT_G_MEAN_MAG |
float32 |
||
PHOT_BP_N_OBS |
int16 |
||
PHOT_BP_MEAN_FLUX |
float64 |
||
PHOT_BP_MEAN_FLUX_ERROR |
float32 |
||
PHOT_BP_MEAN_FLUX_OVER_ERROR |
float32 |
||
PHOT_BP_MEAN_MAG |
float32 |
||
PHOT_RP_N_OBS |
int16 |
||
PHOT_RP_MEAN_FLUX |
float64 |
||
PHOT_RP_MEAN_FLUX_ERROR |
float32 |
||
PHOT_RP_MEAN_FLUX_OVER_ERROR |
float32 |
||
PHOT_RP_MEAN_MAG |
float32 |
||
PHOT_BP_RP_EXCESS_FACTOR |
float32 |
||
PHOT_BP_N_CONTAMINATED_TRANSITS |
int16 |
||
PHOT_BP_N_BLENDED_TRANSITS |
int16 |
||
PHOT_RP_N_CONTAMINATED_TRANSITS |
int16 |
||
PHOT_RP_N_BLENDED_TRANSITS |
int16 |
||
PHOT_PROC_MODE |
int16 |
||
BP_RP |
float32 |
||
BP_G |
float32 |
||
G_RP |
float32 |
||
RADIAL_VELOCITY |
float32 |
||
RADIAL_VELOCITY_ERROR |
float32 |
||
RV_METHOD_USED |
int16 |
||
RV_NB_TRANSITS |
int16 |
||
RV_NB_DEBLENDED_TRANSITS |
int16 |
||
RV_VISIBILITY_PERIODS_USED |
int16 |
||
RV_EXPECTED_SIG_TO_NOISE |
float32 |
||
RV_RENORMALISED_GOF |
float32 |
||
RV_CHISQ_PVALUE |
float32 |
||
RV_TIME_DURATION |
float32 |
||
RV_AMPLITUDE_ROBUST |
float32 |
||
RV_TEMPLATE_TEFF |
float32 |
||
RV_TEMPLATE_LOGG |
float32 |
||
RV_TEMPLATE_FE_H |
float32 |
||
RV_ATM_PARAM_ORIGIN |
int16 |
||
VBROAD |
float32 |
||
VBROAD_ERROR |
float32 |
||
VBROAD_NB_TRANSITS |
int16 |
||
GRVS_MAG |
float32 |
||
GRVS_MAG_ERROR |
float32 |
||
GRVS_MAG_NB_TRANSITS |
int16 |
||
RVS_SPEC_SIG_TO_NOISE |
float32 |
||
PHOT_VARIABLE_FLAG |
char[20] |
||
L |
float64 |
||
B |
float64 |
||
ECL_LON |
float64 |
||
ECL_LAT |
float64 |
||
IN_QSO_CANDIDATES |
logical |
||
IN_GALAXY_CANDIDATES |
logical |
||
NON_SINGLE_STAR |
int16 |
||
HAS_XP_CONTINUOUS |
logical |
||
HAS_XP_SAMPLED |
logical |
||
HAS_RVS |
logical |
||
HAS_EPOCH_PHOTOMETRY |
logical |
||
HAS_EPOCH_RV |
logical |
||
HAS_MCMC_GSPPHOT |
logical |
||
HAS_MCMC_MSC |
logical |
||
IN_ANDROMEDA_SURVEY |
logical |
||
CLASSPROB_DSC_COMBMOD_QUASAR |
float32 |
||
CLASSPROB_DSC_COMBMOD_GALAXY |
float32 |
||
CLASSPROB_DSC_COMBMOD_STAR |
float32 |
||
TEFF_GSPPHOT |
float32 |
||
TEFF_GSPPHOT_LOWER |
float32 |
||
TEFF_GSPPHOT_UPPER |
float32 |
||
LOGG_GSPPHOT |
float32 |
||
LOGG_GSPPHOT_LOWER |
float32 |
||
LOGG_GSPPHOT_UPPER |
float32 |
||
MH_GSPPHOT |
float32 |
||
MH_GSPPHOT_LOWER |
float32 |
||
MH_GSPPHOT_UPPER |
float32 |
||
DISTANCE_GSPPHOT |
float32 |
||
DISTANCE_GSPPHOT_LOWER |
float32 |
||
DISTANCE_GSPPHOT_UPPER |
float32 |
||
AZERO_GSPPHOT |
float32 |
||
AZERO_GSPPHOT_LOWER |
float32 |
||
AZERO_GSPPHOT_UPPER |
float32 |
||
AG_GSPPHOT |
float32 |
||
AG_GSPPHOT_LOWER |
float32 |
||
AG_GSPPHOT_UPPER |
float32 |
||
EBPMINRP_GSPPHOT |
float32 |
||
EBPMINRP_GSPPHOT_LOWER |
float32 |
||
EBPMINRP_GSPPHOT_UPPER |
float32 |
||
LIBNAME_GSPPHOT |
char[20] |
||
EBV |
float32 |
mag |
Galactic extinction E(B-V) reddening from SFD98 |
sp_output¶
sp_output outputs from FERRE
Contents:
RVRUN¶
Results from a given FERRE run
Contents:
healpix¶
grouping by healpix
Contents:
SURVEY¶
grouping by survey
Contents:
PROGRAM¶
grouping by program
Contents:
PIXGROUP¶
grouping by parts of healpixel
Contents:
FERRE fits files¶
SP fits of individiual spectra in healpix pixels
Contents:
spmod_coadd¶
- Summary:
This is the file containing the best-fit models to spectra from FERRE for a given healpix.
- Naming Convention:
spmod_coadd-{SURVEY}-{PROGRAM}-{HEALPIX}.fits, where SURVEY is main, special, sv1, sv2, sv3, and PROGRAM is dark, bright, backup, other.- Regex:
spmod_coadd-.*-.*-.*.fits- File Type:
FITS, 50 MB
Contents¶
Number |
EXTNAME |
Type |
Contents |
|---|---|---|---|
IMAGE |
Empty HDU |
||
B_WAVELENGTH |
IMAGE |
Wavelength array of b-channel spectra |
|
B_MODEL |
BINTABLE |
Flux array of best-fit model b-channel spectra and auxiliary quantities |
|
R_WAVELENGTH |
IMAGE |
Wavelength array of r-channel spectra |
|
R_MODEL |
BINTABLE |
Flux array of best-fit model r-channel spectra and auxiliary quantities |
|
Z_WAVELENGTH |
IMAGE |
Wavelength array of z-channel spectra |
|
Z_MODEL |
BINTABLE |
Flux array of best-fit model z-channel spectra and auxiliary quantities |
|
FIBERMAP |
BINTABLE |
Information about objects inherited from targeting |
|
SCORES |
BINTABLE |
Information about spectra quality |
|
FILTER |
BINTABLE |
Spectral filters used for the determination of chemical abundances |
FITS Header Units¶
HDU00¶
Empty HDU.
Required Header Keywords¶
None
KEY |
Example Value |
Type |
Comment |
|---|---|---|---|
DATE |
2022-04-03T16:48:32 |
str |
Date of processing |
FCONFIG |
desi-ms.yaml |
str |
FERRE config information |
HOST |
login1 |
str |
machine used |
OS |
posix |
str |
Operative system |
PLATFORM |
Linux 4.4.90-92.45-default |
str |
OS details |
NSPEC |
7 |
int |
Number of spectra included |
FTIME |
234.041 |
float |
Compute time used by FERRE |
STIME |
900.0 |
float |
Compute time estimated for Slurm |
NCORES |
16 |
int |
Number of cores in node |
NTHREADS |
12 |
int |
Maximum number of cores for FERRE |
NUMPY |
1.17.2 |
str |
NumPy version |
ASTROPY |
3.2.2 |
str |
AstroPy version |
MATPLOTL |
3.1.1 |
str |
Matplotlib version |
SCIPY |
1.3.1 |
str |
SciPy version |
YAML |
5.1.2 |
str |
Yaml version |
PYTHON |
3.7.4 |
str |
Python version |
PIFERRE |
0.4 |
str |
Piferre version |
FERRE |
5.0.0 |
str |
FERRE version |
HDU01¶
EXTNAME = B_WAVELENGTH
Wavelength array for the b-channel spectra.
Required Header Keywords¶
None
KEY |
Example Value |
Type |
Comment |
|---|---|---|---|
NAXIS1 |
4759 |
int |
Data: FITS image [float64, 4759]
HDU02¶
EXTNAME = B_MODEL
Best-fit b-channel model fluxes and associated quantities.
Required Header Keywords¶
None
KEY |
Example Value |
Type |
Comment |
|---|---|---|---|
NAXIS1 |
190360 |
int |
length of dimension 1 |
NAXIS2 |
7 |
int |
length of dimension 2 |
Required Data Table Columns¶
Name |
Type |
Units |
Description |
|---|---|---|---|
obs |
float64[4759] |
cgs |
Normalized b-channel observed flux as fit by FERRE |
err |
float64[4759] |
cgs |
Normalized b-channel observed flux uncertainties |
flx |
float64[4759] |
cgs |
Best-fit b-channel model flux in absolute units (f_lambda in cgs units) |
fit |
float64[4759] |
cgs |
Best-fit b-channel normalized model flux |
abu |
float64[4759] |
cgs |
Best-fit b-channel normalized model flux from the chemical abundance determinations |
HDU03¶
EXTNAME = R_WAVELENGTH
Wavelength array for the r-channel spectra.
Required Header Keywords¶
None
KEY |
Example Value |
Type |
Comment |
|---|---|---|---|
NAXIS1 |
4231 |
int |
Data: FITS image [float64, 4231]
HDU04¶
EXTNAME = R_MODEL
Best-fit r-channel model fluxes and associated quantities.
Required Header Keywords¶
None
KEY |
Example Value |
Type |
Comment |
|---|---|---|---|
NAXIS1 |
169240 |
int |
length of dimension 1 |
NAXIS2 |
7 |
int |
length of dimension 2 |
Required Data Table Columns¶
Name |
Type |
Units |
Description |
|---|---|---|---|
obs |
float64[4231] |
cgs |
Normalized r-channel observed flux as fit by FERRE |
err |
float64[4231] |
cgs |
Normalized r-channel observed flux uncertainties |
flx |
float64[4231] |
cgs |
Best-fit r-channel model flux in absolute units (f_lambda in cgs units) |
fit |
float64[4231] |
cgs |
Best-fit r-channel normalized model flux |
abu |
float64[4231] |
cgs |
Best-fit r-channel normalized model flux from the chemical abundance determinations |
HDU05¶
EXTNAME = Z_WAVELENGTH
Wavelength array for the z-channel spectra.
Required Header Keywords¶
None
KEY |
Example Value |
Type |
Comment |
|---|---|---|---|
NAXIS1 |
4797 |
int |
Data: FITS image [float64, 4797]
HDU06¶
EXTNAME = Z_MODEL
Best-fit z-channel model fluxes and associated quantities.
Required Header Keywords¶
None
KEY |
Example Value |
Type |
Comment |
|---|---|---|---|
NAXIS1 |
191880 |
int |
length of dimension 1 |
NAXIS2 |
7 |
int |
length of dimension 2 |
Required Data Table Columns¶
Name |
Type |
Units |
Description |
|---|---|---|---|
obs |
float64[4797] |
cgs |
Normalized z-channel observed flux as fit by FERRE |
err |
float64[4797] |
cgs |
Normalized z-channel observed flux uncertainties |
flx |
float64[4797] |
cgs |
Best-fit z-channel model flux in absolute units (f_lambda in cgs units) |
fit |
float64[4797] |
cgs |
Best-fit z-channel normalized model flux |
abu |
float64[4797] |
cgs |
Best-fit z-channel normalized model flux from the chemical abundance determinations |
HDU07¶
EXTNAME = FIBERMAP
- The FIBERMAP targeting table for the objects. The same and in the same order
as in SPTAB.
Required Header Keywords¶
None
KEY |
Example Value |
Type |
Comment |
|---|---|---|---|
NAXIS1 |
341 |
int |
length of dimension 1 |
NAXIS2 |
7 |
int |
length of dimension 2 |
Required Data Table Columns¶
Name |
Type |
Units |
Description |
|---|---|---|---|
TARGETID |
int64 |
Unique DESI target ID |
|
COADD_FIBERSTATUS |
int32 |
bitwise-AND of input FIBERSTATUS |
|
TARGET_RA |
float64 |
deg |
Target right ascension |
TARGET_DEC |
float64 |
deg |
Target declination |
PMRA |
float32 |
mas yr^-1 |
proper motion in the +RA direction (already including cos(dec)) |
PMDEC |
float32 |
mas yr^-1 |
Proper motion in the +Dec direction |
REF_EPOCH |
float32 |
yr |
Reference epoch for Gaia/Tycho astrometry. Typically 2015.5 for Gaia |
FA_TARGET |
int64 |
Targeting bit internally used by fiberassign (linked with FA_TYPE) |
|
FA_TYPE |
binary |
Fiberassign internal target type (science, standard, sky, safe, suppsky) |
|
OBJTYPE |
char[3] |
Object type: TGT, SKY, NON, BAD |
|
SUBPRIORITY |
float64 |
Random subpriority [0-1) to break assignment ties |
|
OBSCONDITIONS |
int32 |
Bitmask of allowed observing conditions |
|
RELEASE |
int16 |
Imaging surveys release ID |
|
BRICKNAME |
char[8] |
Brick name from tractor input |
|
BRICKID |
int32 |
Brick ID from tractor input |
|
BRICK_OBJID |
int32 |
Imaging Surveys OBJID on that brick |
|
MORPHTYPE |
char[4] |
Imaging Surveys morphological type from Tractor |
|
EBV |
float32 |
mag |
Galactic extinction E(B-V) reddening from SFD98 |
FLUX_G |
float32 |
nanomaggy |
Flux in the Legacy Survey g-band (AB) |
FLUX_R |
float32 |
nanomaggy |
Flux in the Legacy Survey r-band (AB) |
FLUX_Z |
float32 |
nanomaggy |
Flux in the Legacy Survey z-band (AB) |
FLUX_W1 |
float32 |
nanomaggy |
WISE flux in W1 (AB) |
FLUX_W2 |
float32 |
nanomaggy |
WISE flux in W2 (AB) |
FLUX_IVAR_G |
float32 |
nanomaggy^-2 |
Inverse variance of FLUX_G (AB) |
FLUX_IVAR_R |
float32 |
nanomaggy^-2 |
Inverse variance of FLUX_R (AB) |
FLUX_IVAR_Z |
float32 |
nanomaggy^-2 |
Inverse variance of FLUX_Z (AB) |
FLUX_IVAR_W1 |
float32 |
nanomaggy^-2 |
Inverse variance of FLUX_W1 (AB) |
FLUX_IVAR_W2 |
float32 |
nanomaggy^-2 |
Inverse variance of FLUX_W2 (AB) |
FIBERFLUX_G |
float32 |
nanomaggy |
Predicted g-band flux within a fiber of diameter 1.5 arcsec from this object in 1 arcsec Gaussian seeing |
FIBERFLUX_R |
float32 |
nanomaggy |
Predicted r-band flux within a fiber of diameter 1.5 arcsec from this object in 1 arcsec Gaussian seeing |
FIBERFLUX_Z |
float32 |
nanomaggy |
Predicted z-band flux within a fiber of diameter 1.5 arcsec from this object in 1 arcsec Gaussian seeing |
FIBERTOTFLUX_G |
float32 |
nanomaggy |
Predicted g-band flux within a fiber of diameter 1.5 arcsec from all sources at this location in 1 arcsec Gaussian seeing |
FIBERTOTFLUX_R |
float32 |
nanomaggy |
Predicted r-band flux within a fiber of diameter 1.5 arcsec from all sources at this location in 1 arcsec Gaussian seeing |
FIBERTOTFLUX_Z |
float32 |
nanomaggy |
Predicted z-band flux within a fiber of diameter 1.5 arcsec from all sources at this location in 1 arcsec Gaussian seeing |
MASKBITS |
int16 |
Bitwise mask from the imaging indicating potential issue or blending |
|
SERSIC |
float32 |
Power-law index for the Sersic profile model (MORPHTYPE=SER) |
|
SHAPE_R |
float32 |
arcsec |
Half-light radius of galaxy model (>0) |
SHAPE_E1 |
float32 |
Ellipticity component 1 of galaxy model for galaxy type MORPHTYPE |
|
SHAPE_E2 |
float32 |
Ellipticity component 2 of galaxy model for galaxy type MORPHTYPE |
|
REF_ID |
int64 |
Tyc1*1,000,000+Tyc2*10+Tyc3 for Tycho-2; sourceid for Gaia DR2 |
|
REF_CAT |
char[2] |
Reference catalog source for star: T2 for Tycho-2, G2 for Gaia DR2, L2 for the SGA, empty otherwise |
|
GAIA_PHOT_G_MEAN_MAG |
float32 |
mag |
Gaia G band magnitude |
GAIA_PHOT_BP_MEAN_MAG |
float32 |
mag |
Gaia BP band magnitude |
GAIA_PHOT_RP_MEAN_MAG |
float32 |
mag |
Gaia RP band magnitude |
PARALLAX |
float32 |
mas |
Reference catalog parallax |
PHOTSYS |
char[1] |
N for the MzLS/BASS photometric system, S for DECaLS |
|
PRIORITY_INIT |
int64 |
Target initial priority from target selection bitmasks and OBSCONDITIONS |
|
NUMOBS_INIT |
int64 |
Initial number of observations for target calculated across target selection bitmasks and OBSCONDITIONS |
|
SV3_DESI_TARGET |
int64 |
DESI (dark time program) target selection bitmask for SV3 |
|
SV3_BGS_TARGET |
int64 |
BGS (bright time program) target selection bitmask for SV3 |
|
SV3_MWS_TARGET |
int64 |
MWS (bright time program) target selection bitmask for SV3 |
|
SV3_SCND_TARGET |
int64 |
Secondary target selection bitmask for SV3 |
|
DESI_TARGET |
int64 |
DESI (dark time program) target selection bitmask |
|
BGS_TARGET |
int64 |
BGS (Bright Galaxy Survey) target selection bitmask |
|
MWS_TARGET |
int64 |
Milky Way Survey targeting bits |
|
PLATE_RA |
float64 |
deg |
Right Ascension to be used by PlateMaker |
PLATE_DEC |
float64 |
deg |
Declination to be used by PlateMaker |
COADD_NUMEXP |
int16 |
Number of exposures in coadd |
|
COADD_EXPTIME |
float32 |
s |
Summed exposure time for coadd |
COADD_NUMNIGHT |
int16 |
Number of nights in coadd |
|
COADD_NUMTILE |
int16 |
Number of tiles in coadd |
|
MEAN_DELTA_X |
float32 |
mm |
Mean (over exposures) fiber difference requested - actual CS5 X location on focal plane |
RMS_DELTA_X |
float32 |
mm |
RMS (over exposures) of the fiber difference between measured and requested CS5 X location on focal plane |
MEAN_DELTA_Y |
float32 |
mm |
Mean (over exposures) fiber difference requested - actual CS5 Y location on focal plane |
RMS_DELTA_Y |
float32 |
mm |
RMS (over exposures) of the fiber difference between measured and requested CS5 Y location on focal plane |
MEAN_FIBER_RA |
float64 |
deg |
Mean (over exposures) RA of actual fiber position |
STD_FIBER_RA |
float32 |
arcsec |
Standard deviation (over exposures) of RA of actual fiber position |
MEAN_FIBER_DEC |
float64 |
deg |
Mean (over exposures) DEC of actual fiber position |
STD_FIBER_DEC |
float32 |
arcsec |
Standard deviation (over exposures) of DEC of actual fiber position |
MEAN_PSF_TO_FIBER_SPECFLUX |
float32 |
Mean of input exposures fraction of light from point-like source captured by 1.5 arcsec diameter fiber given atmospheric seeing |
HDU08¶
EXTNAME = SCORES
The table with various quality information about spectra.
Required Header Keywords¶
None
KEY |
Example Value |
Type |
Comment |
|---|---|---|---|
NAXIS1 |
172 |
int |
length of dimension 1 |
NAXIS2 |
7 |
int |
length of dimension 2 |
Required Data Table Columns¶
Name |
Type |
Units |
Description |
|---|---|---|---|
TARGETID |
int64 |
Unique DESI target ID |
|
INTEG_COADD_FLUX_B |
float32 |
||
MEDIAN_COADD_FLUX_B |
float32 |
||
MEDIAN_COADD_SNR_B |
float32 |
||
INTEG_COADD_FLUX_R |
float32 |
||
MEDIAN_COADD_FLUX_R |
float32 |
||
MEDIAN_COADD_SNR_R |
float32 |
||
INTEG_COADD_FLUX_Z |
float32 |
||
MEDIAN_COADD_FLUX_Z |
float32 |
||
MEDIAN_COADD_SNR_Z |
float32 |
||
TSNR2_GPBDARK_B |
float32 |
||
TSNR2_ELG_B |
float32 |
ELG B template (S/N)^2 |
|
TSNR2_GPBBRIGHT_B |
float32 |
||
TSNR2_LYA_B |
float32 |
LYA B template (S/N)^2 |
|
TSNR2_BGS_B |
float32 |
BGS B template (S/N)^2 |
|
TSNR2_GPBBACKUP_B |
float32 |
||
TSNR2_QSO_B |
float32 |
QSO B template (S/N)^2 |
|
TSNR2_LRG_B |
float32 |
LRG B template (S/N)^2 |
|
TSNR2_GPBDARK_R |
float32 |
||
TSNR2_ELG_R |
float32 |
ELG R template (S/N)^2 |
|
TSNR2_GPBBRIGHT_R |
float32 |
||
TSNR2_LYA_R |
float32 |
LYA R template (S/N)^2 |
|
TSNR2_BGS_R |
float32 |
BGS R template (S/N)^2 |
|
TSNR2_GPBBACKUP_R |
float32 |
||
TSNR2_QSO_R |
float32 |
QSO R template (S/N)^2 |
|
TSNR2_LRG_R |
float32 |
LRG R template (S/N)^2 |
|
TSNR2_GPBDARK_Z |
float32 |
||
TSNR2_ELG_Z |
float32 |
ELG Z template (S/N)^2 |
|
TSNR2_GPBBRIGHT_Z |
float32 |
||
TSNR2_LYA_Z |
float32 |
LYA Z template (S/N)^2 |
|
TSNR2_BGS_Z |
float32 |
BGS Z template (S/N)^2 |
|
TSNR2_GPBBACKUP_Z |
float32 |
||
TSNR2_QSO_Z |
float32 |
QSO Z template (S/N)^2 |
|
TSNR2_LRG_Z |
float32 |
LRG Z template (S/N)^2 |
|
TSNR2_GPBDARK |
float32 |
||
TSNR2_ELG |
float32 |
ELG template (S/N)^2 summed over B,R,Z |
|
TSNR2_GPBBRIGHT |
float32 |
||
TSNR2_LYA |
float32 |
LYA template (S/N)^2 summed over B,R,Z |
|
TSNR2_BGS |
float32 |
BGS template (S/N)^2 summed over B,R,Z |
|
TSNR2_GPBBACKUP |
float32 |
||
TSNR2_QSO |
float32 |
QSO template (S/N)^2 summed over B,R,Z |
|
TSNR2_LRG |
float32 |
LRG template (S/N)^2 summed over B,R,Z |
HDU09¶
EXTNAME = FILTER
Summarize the contents of this HDU.
Required Header Keywords¶
None
KEY |
Example Value |
Type |
Comment |
|---|---|---|---|
NAXIS1 |
32 |
int |
length of dimension 1 |
NAXIS2 |
13787 |
int |
length of dimension 2 |
Required Data Table Columns¶
Name |
Type |
Units |
Description |
|---|---|---|---|
Fe |
float64 |
FERRE array of weights used to derive the iron abundance |
|
Ca |
float64 |
FERRE array of weights used to derive the calcium abundance |
|
C |
float64 |
FERRE array of weights used to derive the carbon abundance |
|
Mg |
float64 |
FERRE array of weights used to derive the magnesium abundance |
Notes and Examples¶
sptab_coadd¶
- Summary:
FERRE results from coadded spectra for a given HEALPIX.
- Naming Convention:
sptab_coadd-{SURVEY}-{PROGRAM}-{HEALPIX}.fits, where SURVEY is main, special, sv1, sv2, sv3, and PROGRAM is dark, bright, backup, other.- Regex:
sptab_coadd-.*-.*-.*.fits- File Type:
FITS, 100 KB
Contents¶
Number |
EXTNAME |
Type |
Contents |
|---|---|---|---|
IMAGE |
Empty HDU |
||
SPTAB |
BINTABLE |
FERRE results |
|
FIBERMAP |
BINTABLE |
Information about objects inherited from targeting |
|
SCORES |
BINTABLE |
Information about spectra quality |
|
AUX |
BINTABLE |
Auxiliary information: names of the parameters and chemical elements in the order used in building the PARAM and ELEM arrays in SPTAB |
FITS Header Units¶
HDU0¶
Empty HDU.
Required Header Keywords¶
None
KEY |
Example Value |
Type |
Comment |
|---|---|---|---|
DATE |
2022-04-03T16:48:32 |
str |
Date of processing |
FCONFIG |
desi-ms.yaml |
str |
FERRE config information |
HOST |
login1 |
str |
machine used |
OS |
posix |
str |
Operative system |
PLATFORM |
Linux 4.4.90-92.45-default |
str |
OS details |
NSPEC |
7 |
int |
Number of spectra included |
FTIME |
234.041 |
float |
Compute time used by FERRE |
STIME |
900.0 |
float |
Compute time estimated for Slurm |
NCORES |
16 |
int |
Number of cores in node |
NTHREADS |
12 |
int |
Number of cores used by large FERRE instances |
NUMPY |
1.17.2 |
str |
NumPy version |
ASTROPY |
3.2.2 |
str |
AstroPy version |
MATPLOTL |
3.1.1 |
str |
Matplotlib version |
SCIPY |
1.3.1 |
str |
SciPy version |
YAML |
5.1.2 |
str |
Yaml version |
PYTHON |
3.7.4 |
str |
Python version |
PIFERRE |
0.4 |
str |
Piferre version |
FERRE |
5.0.0 |
str |
FERRE version |
HDU1¶
EXTNAME = SPTAB
This is the table of measurements by FERRE of coadded DESI spectra for a given HEALPIX.
Required Header Keywords¶
None
KEY |
Example Value |
Type |
Comment |
|---|---|---|---|
NAXIS1 |
448 |
int |
length of dimension 1 |
NAXIS2 |
7 |
int |
length of dimension 2 |
Required Data Table Columns¶
Name |
Type |
Units |
Description |
|---|---|---|---|
SUCCESS |
int64 |
Bit indicating whether the code has likely produced useful results |
|
TARGETID |
int64 |
Unique DESI target ID |
|
TARGET_RA |
float64 |
deg |
Target right ascension |
TARGET_DEC |
float64 |
deg |
Target declination |
REF_ID |
int64 |
Tyc1*1,000,000+Tyc2*10+Tyc3 for Tycho-2; sourceid for Gaia DR2 |
|
REF_CAT |
char[2] |
Reference catalog source for star: T2 for Tycho-2, G2 for Gaia DR2, L2 for the SGA, empty otherwise |
|
SRCFILE |
char[20] |
DESI data file |
|
BESTGRID |
char[8] |
Model grid that produced the best fit |
|
TEFF |
float64 |
K |
Effective temperature (K) |
LOGG |
float64 |
Surface gravity (g in cm/s**2) |
|
FEH |
float64 |
Metallicity [Fe/H] = log10(N(Fe)/N(H)) - log10(N(Fe)/N(H))sun |
|
ALPHAFE |
float64 |
Alpha-to-iron ratio [alpha/Fe] |
|
LOG10MICRO |
float64 |
Log10 of Microturbulence (km/s) |
|
PARAM |
float64[5] |
Array of atmospheric parameters ([Fe/H], [a/Fe], log10micro, Teff,logg) |
|
COVAR |
float64[25] |
Covariance matrix for ([Fe/H], [a/Fe], log10micro, Teff,logg) |
|
ELEM |
float64[4] |
Elemental abundance ratios to hydrogen [elem/H] |
|
ELEM_ERR |
float64[4] |
Uncertainties in the elemental abundance ratios |
|
CHISQ_TOT |
float64 |
Total chi**2 |
|
SNR_MED |
float64 |
Median signal-to-ratio |
|
RV_ADOP |
float64 |
km s-1 |
Adopted Radial Velocity (km/s) |
RV_ERR |
float64 |
km s-1 |
Uncertainty in the adopted Radial Velocity (km/s) |
HDU2¶
EXTNAME = FIBERMAP
FIBERMAP table with information on individual targets copied from original coadd file.
Required Header Keywords¶
None
KEY |
Example Value |
Type |
Comment |
|---|---|---|---|
NAXIS1 |
341 |
int |
length of dimension 1 |
NAXIS2 |
7 |
int |
length of dimension 2 |
Required Data Table Columns¶
Name |
Type |
Units |
Description |
|---|---|---|---|
TARGETID |
int64 |
Unique DESI target ID |
|
COADD_FIBERSTATUS |
int32 |
bitwise-AND of input FIBERSTATUS |
|
TARGET_RA |
float64 |
deg |
Target right ascension |
TARGET_DEC |
float64 |
deg |
Target declination |
PMRA |
float32 |
mas yr^-1 |
proper motion in the +RA direction (already including cos(dec)) |
PMDEC |
float32 |
mas yr^-1 |
Proper motion in the +Dec direction |
REF_EPOCH |
float32 |
yr |
Reference epoch for Gaia/Tycho astrometry. Typically 2015.5 for Gaia |
FA_TARGET |
int64 |
Targeting bit internally used by fiberassign (linked with FA_TYPE) |
|
FA_TYPE |
binary |
Fiberassign internal target type (science, standard, sky, safe, suppsky) |
|
OBJTYPE |
char[3] |
Object type: TGT, SKY, NON, BAD |
|
SUBPRIORITY |
float64 |
Random subpriority [0-1) to break assignment ties |
|
OBSCONDITIONS |
int32 |
Bitmask of allowed observing conditions |
|
RELEASE |
int16 |
Imaging surveys release ID |
|
BRICKNAME |
char[8] |
Brick name from tractor input |
|
BRICKID |
int32 |
Brick ID from tractor input |
|
BRICK_OBJID |
int32 |
Imaging Surveys OBJID on that brick |
|
MORPHTYPE |
char[4] |
Imaging Surveys morphological type from Tractor |
|
EBV |
float32 |
mag |
Galactic extinction E(B-V) reddening from SFD98 |
FLUX_G |
float32 |
nanomaggy |
Flux in the Legacy Survey g-band (AB) |
FLUX_R |
float32 |
nanomaggy |
Flux in the Legacy Survey r-band (AB) |
FLUX_Z |
float32 |
nanomaggy |
Flux in the Legacy Survey z-band (AB) |
FLUX_W1 |
float32 |
nanomaggy |
WISE flux in W1 (AB) |
FLUX_W2 |
float32 |
nanomaggy |
WISE flux in W2 (AB) |
FLUX_IVAR_G |
float32 |
nanomaggy^-2 |
Inverse variance of FLUX_G (AB) |
FLUX_IVAR_R |
float32 |
nanomaggy^-2 |
Inverse variance of FLUX_R (AB) |
FLUX_IVAR_Z |
float32 |
nanomaggy^-2 |
Inverse variance of FLUX_Z (AB) |
FLUX_IVAR_W1 |
float32 |
nanomaggy^-2 |
Inverse variance of FLUX_W1 (AB) |
FLUX_IVAR_W2 |
float32 |
nanomaggy^-2 |
Inverse variance of FLUX_W2 (AB) |
FIBERFLUX_G |
float32 |
nanomaggy |
Predicted g-band flux within a fiber of diameter 1.5 arcsec from this object in 1 arcsec Gaussian seeing |
FIBERFLUX_R |
float32 |
nanomaggy |
Predicted r-band flux within a fiber of diameter 1.5 arcsec from this object in 1 arcsec Gaussian seeing |
FIBERFLUX_Z |
float32 |
nanomaggy |
Predicted z-band flux within a fiber of diameter 1.5 arcsec from this object in 1 arcsec Gaussian seeing |
FIBERTOTFLUX_G |
float32 |
nanomaggy |
Predicted g-band flux within a fiber of diameter 1.5 arcsec from all sources at this location in 1 arcsec Gaussian seeing |
FIBERTOTFLUX_R |
float32 |
nanomaggy |
Predicted r-band flux within a fiber of diameter 1.5 arcsec from all sources at this location in 1 arcsec Gaussian seeing |
FIBERTOTFLUX_Z |
float32 |
nanomaggy |
Predicted z-band flux within a fiber of diameter 1.5 arcsec from all sources at this location in 1 arcsec Gaussian seeing |
MASKBITS |
int16 |
Bitwise mask from the imaging indicating potential issue or blending |
|
SERSIC |
float32 |
Power-law index for the Sersic profile model (MORPHTYPE=SER) |
|
SHAPE_R |
float32 |
arcsec |
Half-light radius of galaxy model (>0) |
SHAPE_E1 |
float32 |
Ellipticity component 1 of galaxy model for galaxy type MORPHTYPE |
|
SHAPE_E2 |
float32 |
Ellipticity component 2 of galaxy model for galaxy type MORPHTYPE |
|
REF_ID |
int64 |
Tyc1*1,000,000+Tyc2*10+Tyc3 for Tycho-2; sourceid for Gaia DR2 |
|
REF_CAT |
char[2] |
Reference catalog source for star: T2 for Tycho-2, G2 for Gaia DR2, L2 for the SGA, empty otherwise |
|
GAIA_PHOT_G_MEAN_MAG |
float32 |
mag |
Gaia G band magnitude |
GAIA_PHOT_BP_MEAN_MAG |
float32 |
mag |
Gaia BP band magnitude |
GAIA_PHOT_RP_MEAN_MAG |
float32 |
mag |
Gaia RP band magnitude |
PARALLAX |
float32 |
mas |
Reference catalog parallax |
PHOTSYS |
char[1] |
N for the MzLS/BASS photometric system, S for DECaLS |
|
PRIORITY_INIT |
int64 |
Target initial priority from target selection bitmasks and OBSCONDITIONS |
|
NUMOBS_INIT |
int64 |
Initial number of observations for target calculated across target selection bitmasks and OBSCONDITIONS |
|
SV3_DESI_TARGET |
int64 |
DESI (dark time program) target selection bitmask for SV3 |
|
SV3_BGS_TARGET |
int64 |
BGS (bright time program) target selection bitmask for SV3 |
|
SV3_MWS_TARGET |
int64 |
MWS (bright time program) target selection bitmask for SV3 |
|
SV3_SCND_TARGET |
int64 |
Secondary target selection bitmask for SV3 |
|
DESI_TARGET |
int64 |
DESI (dark time program) target selection bitmask |
|
BGS_TARGET |
int64 |
BGS (Bright Galaxy Survey) target selection bitmask |
|
MWS_TARGET |
int64 |
Milky Way Survey targeting bits |
|
PLATE_RA |
float64 |
deg |
Right Ascension to be used by PlateMaker |
PLATE_DEC |
float64 |
deg |
Declination to be used by PlateMaker |
COADD_NUMEXP |
int16 |
Number of exposures in coadd |
|
COADD_EXPTIME |
float32 |
s |
Summed exposure time for coadd |
COADD_NUMNIGHT |
int16 |
Number of nights in coadd |
|
COADD_NUMTILE |
int16 |
Number of tiles in coadd |
|
MEAN_DELTA_X |
float32 |
mm |
Mean (over exposures) fiber difference requested - actual CS5 X location on focal plane |
RMS_DELTA_X |
float32 |
mm |
RMS (over exposures) of the fiber difference between measured and requested CS5 X location on focal plane |
MEAN_DELTA_Y |
float32 |
mm |
Mean (over exposures) fiber difference requested - actual CS5 Y location on focal plane |
RMS_DELTA_Y |
float32 |
mm |
RMS (over exposures) of the fiber difference between measured and requested CS5 Y location on focal plane |
MEAN_FIBER_RA |
float64 |
deg |
Mean (over exposures) RA of actual fiber position |
STD_FIBER_RA |
float32 |
arcsec |
Standard deviation (over exposures) of RA of actual fiber position |
MEAN_FIBER_DEC |
float64 |
deg |
Mean (over exposures) DEC of actual fiber position |
STD_FIBER_DEC |
float32 |
arcsec |
Standard deviation (over exposures) of DEC of actual fiber position |
MEAN_PSF_TO_FIBER_SPECFLUX |
float32 |
Mean of input exposures fraction of light from point-like source captured by 1.5 arcsec diameter fiber given atmospheric seeing |
HDU3¶
EXTNAME = SCORES
The table with various quality information about spectra.
Required Header Keywords¶
None
KEY |
Example Value |
Type |
Comment |
|---|---|---|---|
NAXIS1 |
172 |
int |
length of dimension 1 |
NAXIS2 |
7 |
int |
length of dimension 2 |
Required Data Table Columns¶
Name |
Type |
Units |
Description |
|---|---|---|---|
TARGETID |
int64 |
Unique DESI target ID |
|
INTEG_COADD_FLUX_B |
float32 |
||
MEDIAN_COADD_FLUX_B |
float32 |
||
MEDIAN_COADD_SNR_B |
float32 |
||
INTEG_COADD_FLUX_R |
float32 |
||
MEDIAN_COADD_FLUX_R |
float32 |
||
MEDIAN_COADD_SNR_R |
float32 |
||
INTEG_COADD_FLUX_Z |
float32 |
||
MEDIAN_COADD_FLUX_Z |
float32 |
||
MEDIAN_COADD_SNR_Z |
float32 |
||
TSNR2_GPBDARK_B |
float32 |
||
TSNR2_ELG_B |
float32 |
ELG B template (S/N)^2 |
|
TSNR2_GPBBRIGHT_B |
float32 |
||
TSNR2_LYA_B |
float32 |
LYA B template (S/N)^2 |
|
TSNR2_BGS_B |
float32 |
BGS B template (S/N)^2 |
|
TSNR2_GPBBACKUP_B |
float32 |
||
TSNR2_QSO_B |
float32 |
QSO B template (S/N)^2 |
|
TSNR2_LRG_B |
float32 |
LRG B template (S/N)^2 |
|
TSNR2_GPBDARK_R |
float32 |
||
TSNR2_ELG_R |
float32 |
ELG R template (S/N)^2 |
|
TSNR2_GPBBRIGHT_R |
float32 |
||
TSNR2_LYA_R |
float32 |
LYA R template (S/N)^2 |
|
TSNR2_BGS_R |
float32 |
BGS R template (S/N)^2 |
|
TSNR2_GPBBACKUP_R |
float32 |
||
TSNR2_QSO_R |
float32 |
QSO R template (S/N)^2 |
|
TSNR2_LRG_R |
float32 |
LRG R template (S/N)^2 |
|
TSNR2_GPBDARK_Z |
float32 |
||
TSNR2_ELG_Z |
float32 |
ELG Z template (S/N)^2 |
|
TSNR2_GPBBRIGHT_Z |
float32 |
||
TSNR2_LYA_Z |
float32 |
LYA Z template (S/N)^2 |
|
TSNR2_BGS_Z |
float32 |
BGS Z template (S/N)^2 |
|
TSNR2_GPBBACKUP_Z |
float32 |
||
TSNR2_QSO_Z |
float32 |
QSO Z template (S/N)^2 |
|
TSNR2_LRG_Z |
float32 |
LRG Z template (S/N)^2 |
|
TSNR2_GPBDARK |
float32 |
||
TSNR2_ELG |
float32 |
ELG template (S/N)^2 summed over B,R,Z |
|
TSNR2_GPBBRIGHT |
float32 |
||
TSNR2_LYA |
float32 |
LYA template (S/N)^2 summed over B,R,Z |
|
TSNR2_BGS |
float32 |
BGS template (S/N)^2 summed over B,R,Z |
|
TSNR2_GPBBACKUP |
float32 |
||
TSNR2_QSO |
float32 |
QSO template (S/N)^2 summed over B,R,Z |
|
TSNR2_LRG |
float32 |
LRG template (S/N)^2 summed over B,R,Z |
HDU4¶
EXTNAME = AUX
Additional information on the order of the parameters and elements in the arrays PARAM and ELEM, respectively.
Required Header Keywords¶
None
KEY |
Example Value |
Type |
Comment |
|---|---|---|---|
NAXIS1 |
232 |
int |
length of dimension 1 |
NAXIS2 |
1 |
int |
length of dimension 2 |
Required Data Table Columns¶
Name |
Type |
Units |
Description |
|---|---|---|---|
p |
char[200] |
||
e |
char[32] |
Notes and Examples¶
sppix¶
- Summary:
FERRE results from coadded spectra for different surveys, programs.
- Naming Convention:
sppix-{SURVEY}-{PROGRAM}.fits, where SURVEY is main, special, sv1, sv2, sv3, and PROGRAM is dark, bright, backup, other.- Regex:
sppix-.*-.*fits- File Type:
FITS, 100 MB
Contents¶
Number |
EXTNAME |
Type |
Contents |
|---|---|---|---|
IMAGE |
Empty HDU |
||
SPTAB |
BINTABLE |
FERRE results |
|
FIBERMAP |
BINTABLE |
Information about objects inherited from targeting |
|
SCORES |
BINTABLE |
Information about spectra quality |
|
GAIA |
BINTABLE |
Gaia crossmatch |
FITS Header Units¶
HDU0¶
Empty HDU.
HDU1¶
EXTNAME = SPTAB
This is the table of measurements by FERRE of coadded DESI spectra for given survey/program.
Required Header Keywords¶
None
KEY |
Example Value |
Type |
Comment |
|---|---|---|---|
NAXIS1 |
454 |
int |
length of dimension 1 |
NAXIS2 |
728 |
int |
length of dimension 2 |
Required Data Table Columns¶
Name |
Type |
Units |
Description |
|---|---|---|---|
SUCCESS |
int64 |
Bit indicating whether the code has likely produced useful results |
|
TARGETID |
int64 |
Unique DESI target ID |
|
TARGET_RA |
float64 |
deg |
Target right ascension |
TARGET_DEC |
float64 |
deg |
Target declination |
REF_ID |
int64 |
Tyc1*1,000,000+Tyc2*10+Tyc3 for Tycho-2; sourceid for Gaia DR2 |
|
REF_CAT |
char[2] |
Reference catalog source for star: T2 for Tycho-2, G2 for Gaia DR2, L2 for the SGA, empty otherwise |
|
SRCFILE |
char[20] |
DESI data file |
|
BESTGRID |
char[8] |
Model grid that produced the best fit |
|
TEFF |
float64 |
K |
Effective temperature (K) |
LOGG |
float64 |
Surface gravity (g in cm/s**2) |
|
FEH |
float64 |
Metallicity [Fe/H] = log10(N(Fe)/N(H)) - log10(N(Fe)/N(H))sun |
|
ALPHAFE |
float64 |
Alpha-to-iron ratio [alpha/Fe] |
|
LOG10MICRO |
float64 |
Log10 of Microturbulence (km/s) |
|
PARAM |
float64[5] |
Array of atmospheric parameters ([Fe/H], [a/Fe], log10micro, Teff,logg) |
|
COVAR |
float64[25] |
Covariance matrix for ([Fe/H], [a/Fe], log10micro, Teff,logg) |
|
ELEM |
float64[4] |
Elemental abundance ratios to hydrogen [elem/H] |
|
ELEM_ERR |
float64[4] |
Uncertainties in the elemental abundance ratios |
|
CHISQ_TOT |
float64 |
Total chi**2 |
|
SNR_MED |
float64 |
Median signal-to-ratio |
|
RV_ADOP |
float64 |
km s-1 |
Adopted Radial Velocity (km/s) |
RV_ERR |
float64 |
km s-1 |
Uncertainty in the adopted Radial Velocity (km/s) |
HEALPIX |
int64 |
HEALPixel containing this location at NSIDE=64 in the NESTED scheme |
HDU2¶
EXTNAME = FIBERMAP
FIBERMAP table with information on individual targets copied from original coadd file.
Required Header Keywords¶
None
KEY |
Example Value |
Type |
Comment |
|---|---|---|---|
NAXIS1 |
317 |
int |
length of dimension 1 |
NAXIS2 |
728 |
int |
length of dimension 2 |
Required Data Table Columns¶
Name |
Type |
Units |
Description |
|---|---|---|---|
TARGETID |
int64 |
Unique DESI target ID |
|
COADD_FIBERSTATUS |
int32 |
bitwise-AND of input FIBERSTATUS |
|
TARGET_RA |
float64 |
deg |
Target right ascension |
TARGET_DEC |
float64 |
deg |
Target declination |
PMRA |
float32 |
mas yr^-1 |
proper motion in the +RA direction (already including cos(dec)) |
PMDEC |
float32 |
mas yr^-1 |
Proper motion in the +Dec direction |
REF_EPOCH |
float32 |
yr |
Reference epoch for Gaia/Tycho astrometry. Typically 2015.5 for Gaia |
FA_TARGET |
int64 |
Targeting bit internally used by fiberassign (linked with FA_TYPE) |
|
FA_TYPE |
binary |
Fiberassign internal target type (science, standard, sky, safe, suppsky) |
|
OBJTYPE |
char[3] |
Object type: TGT, SKY, NON, BAD |
|
SUBPRIORITY |
float64 |
Random subpriority [0-1) to break assignment ties |
|
OBSCONDITIONS |
int32 |
Bitmask of allowed observing conditions |
|
RELEASE |
int16 |
Imaging surveys release ID |
|
BRICKNAME |
char[8] |
Brick name from tractor input |
|
BRICKID |
int32 |
Brick ID from tractor input |
|
BRICK_OBJID |
int32 |
Imaging Surveys OBJID on that brick |
|
MORPHTYPE |
char[4] |
Imaging Surveys morphological type from Tractor |
|
EBV |
float32 |
mag |
Galactic extinction E(B-V) reddening from SFD98 |
FLUX_G |
float32 |
nanomaggy |
Flux in the Legacy Survey g-band (AB) |
FLUX_R |
float32 |
nanomaggy |
Flux in the Legacy Survey r-band (AB) |
FLUX_Z |
float32 |
nanomaggy |
Flux in the Legacy Survey z-band (AB) |
FLUX_W1 |
float32 |
nanomaggy |
WISE flux in W1 (AB) |
FLUX_W2 |
float32 |
nanomaggy |
WISE flux in W2 (AB) |
FLUX_IVAR_G |
float32 |
nanomaggy^-2 |
Inverse variance of FLUX_G (AB) |
FLUX_IVAR_R |
float32 |
nanomaggy^-2 |
Inverse variance of FLUX_R (AB) |
FLUX_IVAR_Z |
float32 |
nanomaggy^-2 |
Inverse variance of FLUX_Z (AB) |
FLUX_IVAR_W1 |
float32 |
nanomaggy^-2 |
Inverse variance of FLUX_W1 (AB) |
FLUX_IVAR_W2 |
float32 |
nanomaggy^-2 |
Inverse variance of FLUX_W2 (AB) |
FIBERFLUX_G |
float32 |
nanomaggy |
Predicted g-band flux within a fiber of diameter 1.5 arcsec from this object in 1 arcsec Gaussian seeing |
FIBERFLUX_R |
float32 |
nanomaggy |
Predicted r-band flux within a fiber of diameter 1.5 arcsec from this object in 1 arcsec Gaussian seeing |
FIBERFLUX_Z |
float32 |
nanomaggy |
Predicted z-band flux within a fiber of diameter 1.5 arcsec from this object in 1 arcsec Gaussian seeing |
FIBERTOTFLUX_G |
float32 |
nanomaggy |
Predicted g-band flux within a fiber of diameter 1.5 arcsec from all sources at this location in 1 arcsec Gaussian seeing |
FIBERTOTFLUX_R |
float32 |
nanomaggy |
Predicted r-band flux within a fiber of diameter 1.5 arcsec from all sources at this location in 1 arcsec Gaussian seeing |
FIBERTOTFLUX_Z |
float32 |
nanomaggy |
Predicted z-band flux within a fiber of diameter 1.5 arcsec from all sources at this location in 1 arcsec Gaussian seeing |
MASKBITS |
int16 |
Bitwise mask from the imaging indicating potential issue or blending |
|
SERSIC |
float32 |
Power-law index for the Sersic profile model (MORPHTYPE=SER) |
|
SHAPE_R |
float32 |
arcsec |
Half-light radius of galaxy model (>0) |
SHAPE_E1 |
float32 |
Ellipticity component 1 of galaxy model for galaxy type MORPHTYPE |
|
SHAPE_E2 |
float32 |
Ellipticity component 2 of galaxy model for galaxy type MORPHTYPE |
|
REF_ID |
int64 |
Tyc1*1,000,000+Tyc2*10+Tyc3 for Tycho-2; sourceid for Gaia DR2 |
|
REF_CAT |
char[2] |
Reference catalog source for star: T2 for Tycho-2, G2 for Gaia DR2, L2 for the SGA, empty otherwise |
|
GAIA_PHOT_G_MEAN_MAG |
float32 |
mag |
Gaia G band magnitude |
GAIA_PHOT_BP_MEAN_MAG |
float32 |
mag |
Gaia BP band magnitude |
GAIA_PHOT_RP_MEAN_MAG |
float32 |
mag |
Gaia RP band magnitude |
PARALLAX |
float32 |
mas |
Reference catalog parallax |
PHOTSYS |
char[1] |
N for the MzLS/BASS photometric system, S for DECaLS |
|
PRIORITY_INIT |
int64 |
Target initial priority from target selection bitmasks and OBSCONDITIONS |
|
NUMOBS_INIT |
int64 |
Initial number of observations for target calculated across target selection bitmasks and OBSCONDITIONS |
|
CMX_TARGET |
int64 |
Target selection bitmask for commissioning |
|
DESI_TARGET |
int64 |
DESI (dark time program) target selection bitmask |
|
BGS_TARGET |
int64 |
BGS (Bright Galaxy Survey) target selection bitmask |
|
MWS_TARGET |
int64 |
Milky Way Survey targeting bits |
|
PLATE_RA |
float64 |
deg |
Right Ascension to be used by PlateMaker |
PLATE_DEC |
float64 |
deg |
Declination to be used by PlateMaker |
COADD_NUMEXP |
int16 |
Number of exposures in coadd |
|
COADD_EXPTIME |
float32 |
s |
Summed exposure time for coadd |
COADD_NUMNIGHT |
int16 |
Number of nights in coadd |
|
COADD_NUMTILE |
int16 |
Number of tiles in coadd |
|
MEAN_DELTA_X |
float32 |
mm |
Mean (over exposures) fiber difference requested - actual CS5 X location on focal plane |
RMS_DELTA_X |
float32 |
mm |
RMS (over exposures) of the fiber difference between measured and requested CS5 X location on focal plane |
MEAN_DELTA_Y |
float32 |
mm |
Mean (over exposures) fiber difference requested - actual CS5 Y location on focal plane |
RMS_DELTA_Y |
float32 |
mm |
RMS (over exposures) of the fiber difference between measured and requested CS5 Y location on focal plane |
MEAN_FIBER_RA |
float64 |
deg |
Mean (over exposures) RA of actual fiber position |
STD_FIBER_RA |
float32 |
arcsec |
Standard deviation (over exposures) of RA of actual fiber position |
MEAN_FIBER_DEC |
float64 |
deg |
Mean (over exposures) DEC of actual fiber position |
STD_FIBER_DEC |
float32 |
arcsec |
Standard deviation (over exposures) of DEC of actual fiber position |
MEAN_PSF_TO_FIBER_SPECFLUX |
float32 |
Mean of input exposures fraction of light from point-like source captured by 1.5 arcsec diameter fiber given atmospheric seeing |
HDU3¶
EXTNAME = SCORES
The table with various quality information about spectra.
Required Header Keywords¶
None
KEY |
Example Value |
Type |
Comment |
|---|---|---|---|
NAXIS1 |
172 |
int |
length of dimension 1 |
NAXIS2 |
728 |
int |
length of dimension 2 |
Required Data Table Columns¶
Name |
Type |
Units |
Description |
|---|---|---|---|
TARGETID |
int64 |
Unique DESI target ID |
|
INTEG_COADD_FLUX_B |
float32 |
||
MEDIAN_COADD_FLUX_B |
float32 |
||
MEDIAN_COADD_SNR_B |
float32 |
||
INTEG_COADD_FLUX_R |
float32 |
||
MEDIAN_COADD_FLUX_R |
float32 |
||
MEDIAN_COADD_SNR_R |
float32 |
||
INTEG_COADD_FLUX_Z |
float32 |
||
MEDIAN_COADD_FLUX_Z |
float32 |
||
MEDIAN_COADD_SNR_Z |
float32 |
||
TSNR2_GPBDARK_B |
float32 |
||
TSNR2_ELG_B |
float32 |
ELG B template (S/N)^2 |
|
TSNR2_GPBBRIGHT_B |
float32 |
||
TSNR2_LYA_B |
float32 |
LYA B template (S/N)^2 |
|
TSNR2_BGS_B |
float32 |
BGS B template (S/N)^2 |
|
TSNR2_GPBBACKUP_B |
float32 |
||
TSNR2_QSO_B |
float32 |
QSO B template (S/N)^2 |
|
TSNR2_LRG_B |
float32 |
LRG B template (S/N)^2 |
|
TSNR2_GPBDARK_R |
float32 |
||
TSNR2_ELG_R |
float32 |
ELG R template (S/N)^2 |
|
TSNR2_GPBBRIGHT_R |
float32 |
||
TSNR2_LYA_R |
float32 |
LYA R template (S/N)^2 |
|
TSNR2_BGS_R |
float32 |
BGS R template (S/N)^2 |
|
TSNR2_GPBBACKUP_R |
float32 |
||
TSNR2_QSO_R |
float32 |
QSO R template (S/N)^2 |
|
TSNR2_LRG_R |
float32 |
LRG R template (S/N)^2 |
|
TSNR2_GPBDARK_Z |
float32 |
||
TSNR2_ELG_Z |
float32 |
ELG Z template (S/N)^2 |
|
TSNR2_GPBBRIGHT_Z |
float32 |
||
TSNR2_LYA_Z |
float32 |
LYA Z template (S/N)^2 |
|
TSNR2_BGS_Z |
float32 |
BGS Z template (S/N)^2 |
|
TSNR2_GPBBACKUP_Z |
float32 |
||
TSNR2_QSO_Z |
float32 |
QSO Z template (S/N)^2 |
|
TSNR2_LRG_Z |
float32 |
LRG Z template (S/N)^2 |
|
TSNR2_GPBDARK |
float32 |
||
TSNR2_ELG |
float32 |
ELG template (S/N)^2 summed over B,R,Z |
|
TSNR2_GPBBRIGHT |
float32 |
||
TSNR2_LYA |
float32 |
LYA template (S/N)^2 summed over B,R,Z |
|
TSNR2_BGS |
float32 |
BGS template (S/N)^2 summed over B,R,Z |
|
TSNR2_GPBBACKUP |
float32 |
||
TSNR2_QSO |
float32 |
QSO template (S/N)^2 summed over B,R,Z |
|
TSNR2_LRG |
float32 |
LRG template (S/N)^2 summed over B,R,Z |
HDU4¶
EXTNAME = GAIA
The Gaia DR3 measurements for each object in the catalog.
Required Header Keywords¶
None
KEY |
Example Value |
Type |
Comment |
|---|---|---|---|
NAXIS1 |
632 |
int |
length of dimension 1 |
NAXIS2 |
728 |
int |
length of dimension 2 |
Required Data Table Columns¶
Name |
Type |
Units |
Description |
|---|---|---|---|
SOLUTION_ID |
int64 |
||
DESIGNATION |
char[20] |
||
SOURCE_ID |
int64 |
||
RANDOM_INDEX |
int64 |
||
REF_EPOCH |
float64 |
yr |
Reference epoch for Gaia/Tycho astrometry. Typically 2015.5 for Gaia |
RA |
float64 |
deg |
Target Right Ascension |
RA_ERROR |
float32 |
||
DEC |
float64 |
deg |
Target declination |
DEC_ERROR |
float32 |
||
PARALLAX |
float64 |
mas |
Reference catalog parallax |
PARALLAX_ERROR |
float32 |
||
PARALLAX_OVER_ERROR |
float32 |
||
PM |
float32 |
||
PMRA |
float64 |
mas yr^-1 |
proper motion in the +RA direction (already including cos(dec)) |
PMRA_ERROR |
float32 |
||
PMDEC |
float64 |
mas yr^-1 |
Proper motion in the +Dec direction |
PMDEC_ERROR |
float32 |
||
RA_DEC_CORR |
float32 |
||
RA_PARALLAX_CORR |
float32 |
||
RA_PMRA_CORR |
float32 |
||
RA_PMDEC_CORR |
float32 |
||
DEC_PARALLAX_CORR |
float32 |
||
DEC_PMRA_CORR |
float32 |
||
DEC_PMDEC_CORR |
float32 |
||
PARALLAX_PMRA_CORR |
float32 |
||
PARALLAX_PMDEC_CORR |
float32 |
||
PMRA_PMDEC_CORR |
float32 |
||
ASTROMETRIC_N_OBS_AL |
int16 |
||
ASTROMETRIC_N_OBS_AC |
int16 |
||
ASTROMETRIC_N_GOOD_OBS_AL |
int16 |
||
ASTROMETRIC_N_BAD_OBS_AL |
int16 |
||
ASTROMETRIC_GOF_AL |
float32 |
||
ASTROMETRIC_CHI2_AL |
float32 |
||
ASTROMETRIC_EXCESS_NOISE |
float32 |
||
ASTROMETRIC_EXCESS_NOISE_SIG |
float32 |
||
ASTROMETRIC_PARAMS_SOLVED |
int16 |
||
ASTROMETRIC_PRIMARY_FLAG |
logical |
||
NU_EFF_USED_IN_ASTROMETRY |
float32 |
||
PSEUDOCOLOUR |
float32 |
||
PSEUDOCOLOUR_ERROR |
float32 |
||
RA_PSEUDOCOLOUR_CORR |
float32 |
||
DEC_PSEUDOCOLOUR_CORR |
float32 |
||
PARALLAX_PSEUDOCOLOUR_CORR |
float32 |
||
PMRA_PSEUDOCOLOUR_CORR |
float32 |
||
PMDEC_PSEUDOCOLOUR_CORR |
float32 |
||
ASTROMETRIC_MATCHED_TRANSITS |
int16 |
||
VISIBILITY_PERIODS_USED |
int16 |
||
ASTROMETRIC_SIGMA5D_MAX |
float32 |
||
MATCHED_TRANSITS |
int16 |
||
NEW_MATCHED_TRANSITS |
int16 |
||
MATCHED_TRANSITS_REMOVED |
int16 |
||
IPD_GOF_HARMONIC_AMPLITUDE |
float32 |
||
IPD_GOF_HARMONIC_PHASE |
float32 |
||
IPD_FRAC_MULTI_PEAK |
int16 |
||
IPD_FRAC_ODD_WIN |
int16 |
||
RUWE |
float32 |
||
SCAN_DIRECTION_STRENGTH_K1 |
float32 |
||
SCAN_DIRECTION_STRENGTH_K2 |
float32 |
||
SCAN_DIRECTION_STRENGTH_K3 |
float32 |
||
SCAN_DIRECTION_STRENGTH_K4 |
float32 |
||
SCAN_DIRECTION_MEAN_K1 |
float32 |
||
SCAN_DIRECTION_MEAN_K2 |
float32 |
||
SCAN_DIRECTION_MEAN_K3 |
float32 |
||
SCAN_DIRECTION_MEAN_K4 |
float32 |
||
DUPLICATED_SOURCE |
logical |
||
PHOT_G_N_OBS |
int16 |
||
PHOT_G_MEAN_FLUX |
float64 |
||
PHOT_G_MEAN_FLUX_ERROR |
float32 |
||
PHOT_G_MEAN_FLUX_OVER_ERROR |
float32 |
||
PHOT_G_MEAN_MAG |
float32 |
||
PHOT_BP_N_OBS |
int16 |
||
PHOT_BP_MEAN_FLUX |
float64 |
||
PHOT_BP_MEAN_FLUX_ERROR |
float32 |
||
PHOT_BP_MEAN_FLUX_OVER_ERROR |
float32 |
||
PHOT_BP_MEAN_MAG |
float32 |
||
PHOT_RP_N_OBS |
int16 |
||
PHOT_RP_MEAN_FLUX |
float64 |
||
PHOT_RP_MEAN_FLUX_ERROR |
float32 |
||
PHOT_RP_MEAN_FLUX_OVER_ERROR |
float32 |
||
PHOT_RP_MEAN_MAG |
float32 |
||
PHOT_BP_RP_EXCESS_FACTOR |
float32 |
||
PHOT_BP_N_CONTAMINATED_TRANSITS |
int16 |
||
PHOT_BP_N_BLENDED_TRANSITS |
int16 |
||
PHOT_RP_N_CONTAMINATED_TRANSITS |
int16 |
||
PHOT_RP_N_BLENDED_TRANSITS |
int16 |
||
PHOT_PROC_MODE |
int16 |
||
BP_RP |
float32 |
||
BP_G |
float32 |
||
G_RP |
float32 |
||
RADIAL_VELOCITY |
float32 |
||
RADIAL_VELOCITY_ERROR |
float32 |
||
RV_METHOD_USED |
int16 |
||
RV_NB_TRANSITS |
int16 |
||
RV_NB_DEBLENDED_TRANSITS |
int16 |
||
RV_VISIBILITY_PERIODS_USED |
int16 |
||
RV_EXPECTED_SIG_TO_NOISE |
float32 |
||
RV_RENORMALISED_GOF |
float32 |
||
RV_CHISQ_PVALUE |
float32 |
||
RV_TIME_DURATION |
float32 |
||
RV_AMPLITUDE_ROBUST |
float32 |
||
RV_TEMPLATE_TEFF |
float32 |
||
RV_TEMPLATE_LOGG |
float32 |
||
RV_TEMPLATE_FE_H |
float32 |
||
RV_ATM_PARAM_ORIGIN |
int16 |
||
VBROAD |
float32 |
||
VBROAD_ERROR |
float32 |
||
VBROAD_NB_TRANSITS |
int16 |
||
GRVS_MAG |
float32 |
||
GRVS_MAG_ERROR |
float32 |
||
GRVS_MAG_NB_TRANSITS |
int16 |
||
RVS_SPEC_SIG_TO_NOISE |
float32 |
||
PHOT_VARIABLE_FLAG |
char[20] |
||
L |
float64 |
||
B |
float64 |
||
ECL_LON |
float64 |
||
ECL_LAT |
float64 |
||
IN_QSO_CANDIDATES |
logical |
||
IN_GALAXY_CANDIDATES |
logical |
||
NON_SINGLE_STAR |
int16 |
||
HAS_XP_CONTINUOUS |
logical |
||
HAS_XP_SAMPLED |
logical |
||
HAS_RVS |
logical |
||
HAS_EPOCH_PHOTOMETRY |
logical |
||
HAS_EPOCH_RV |
logical |
||
HAS_MCMC_GSPPHOT |
logical |
||
HAS_MCMC_MSC |
logical |
||
IN_ANDROMEDA_SURVEY |
logical |
||
CLASSPROB_DSC_COMBMOD_QUASAR |
float32 |
||
CLASSPROB_DSC_COMBMOD_GALAXY |
float32 |
||
CLASSPROB_DSC_COMBMOD_STAR |
float32 |
||
TEFF_GSPPHOT |
float32 |
||
TEFF_GSPPHOT_LOWER |
float32 |
||
TEFF_GSPPHOT_UPPER |
float32 |
||
LOGG_GSPPHOT |
float32 |
||
LOGG_GSPPHOT_LOWER |
float32 |
||
LOGG_GSPPHOT_UPPER |
float32 |
||
MH_GSPPHOT |
float32 |
||
MH_GSPPHOT_LOWER |
float32 |
||
MH_GSPPHOT_UPPER |
float32 |
||
DISTANCE_GSPPHOT |
float32 |
||
DISTANCE_GSPPHOT_LOWER |
float32 |
||
DISTANCE_GSPPHOT_UPPER |
float32 |
||
AZERO_GSPPHOT |
float32 |
||
AZERO_GSPPHOT_LOWER |
float32 |
||
AZERO_GSPPHOT_UPPER |
float32 |
||
AG_GSPPHOT |
float32 |
||
AG_GSPPHOT_LOWER |
float32 |
||
AG_GSPPHOT_UPPER |
float32 |
||
EBPMINRP_GSPPHOT |
float32 |
||
EBPMINRP_GSPPHOT_LOWER |
float32 |
||
EBPMINRP_GSPPHOT_UPPER |
float32 |
||
LIBNAME_GSPPHOT |
char[20] |
||
EBV |
float32 |
mag |
Galactic extinction E(B-V) reddening from SFD98 |
Notes and Examples¶
Example https://data.desi.lbl.gov/desi/science/mws/redux/edr/v1/sp_output/sppix-sv3-bright.fits
mwsall¶
- Summary:
Combined catalog of DESI measurements from RVSpecfit and FERRE crossmatched with Gaia
- File Type:
FITS, 1 GB
Contents¶
Number |
EXTNAME |
Type |
Contents |
|---|---|---|---|
IMAGE |
Empty HDU |
||
RVTAB |
BINTABLE |
RVSpecfit results |
|
SPTAB |
BINTABLE |
FERRE results |
|
FIBERMAP |
BINTABLE |
Information about objects inherited from targeting |
|
SCORES |
BINTABLE |
Information about spectra quality |
|
GAIA |
BINTABLE |
Gaia crossmatch |
FITS Header Units¶
HDU0¶
Empty HDU.
HDU1¶
EXTNAME = RVTAB
This is table of measurements by RVSpecfit of coadded DESI spectra. This table combines the measurements from different survey/program combinations and labels their suggested PRIMARY observation.
Required Header Keywords¶
None
KEY |
Example Value |
Type |
Comment |
|---|---|---|---|
NAXIS1 |
267 |
int |
length of dimension 1 |
NAXIS2 |
625588 |
int |
length of dimension 2 |
CHECKSUM |
nXheqVeZnVednVeZ |
str |
|
DATASUM |
2471068207 |
str |
Required Data Table Columns¶
Name |
Type |
Units |
Description |
|---|---|---|---|
VRAD |
float64 |
km s-1 |
Radial velocity |
VRAD_ERR |
float64 |
km s-1 |
Radial velocity error |
VRAD_SKEW |
float64 |
Radial velocity posterior skewness |
|
VRAD_KURT |
float64 |
Radial velocity posterior kurtosis |
|
LOGG |
float64 |
Log of surface gravity |
|
TEFF |
float64 |
K |
Effective temperature |
ALPHAFE |
float64 |
[alpha/Fe] from template fitting |
|
FEH |
float64 |
[Fe/H] from template fitting |
|
LOGG_ERR |
float64 |
Log of surface gravity uncertainty |
|
TEFF_ERR |
float64 |
K |
Effective temperature uncertainty |
ALPHAFE_ERR |
float64 |
[alpha/Fe] uncertainty from template fitting |
|
FEH_ERR |
float64 |
[Fe/H] uncertainty from template fitting |
|
VSINI |
float64 |
km s-1 |
Stellar rotation velocity |
NEXP |
int64 |
||
CHISQ_TOT |
float64 |
Total chi-square for all arms |
|
CHISQ_C_TOT |
float64 |
Total chi-square for all arms for polynomial only fit |
|
CHISQ_B |
float64 |
Chi-square in the B arm |
|
CHISQ_C_B |
float64 |
Chi-square in the B arm after fitting continuum only |
|
CHISQ_R |
float64 |
Chi-square in the R arm |
|
CHISQ_C_R |
float64 |
Chi-square in the R arm after fitting continuum only |
|
CHISQ_Z |
float64 |
Chi-square in the Z arm |
|
CHISQ_C_Z |
float64 |
Chi-square in the Z arm after fitting continuum only |
|
RVS_WARN |
int64 |
RVSpecFit warning flag |
|
REF_ID |
int64 |
Tyc1*1,000,000+Tyc2*10+Tyc3 for Tycho-2; sourceid for Gaia DR2 |
|
REF_CAT |
char[2] |
Reference catalog source for star: T2 for Tycho-2, G2 for Gaia DR2, L2 for the SGA, empty otherwise |
|
TARGET_RA |
float64 |
deg |
Target right ascension |
TARGET_DEC |
float64 |
deg |
Target declination |
TARGETID |
int64 |
Unique DESI target ID |
|
SN_B |
float32 |
Median S/N in the B arm |
|
SN_R |
float32 |
Median S/N in the R arm |
|
SN_Z |
float32 |
Median S/N in the Z arm |
|
SUCCESS |
logical |
Did we succeed or fail |
|
HEALPIX |
int64 |
HEALPixel containing this location at NSIDE=64 in the NESTED scheme |
|
RR_Z |
float64 |
Redrock redshift |
|
RR_SPECTYPE |
char[6] |
Redrock spectroscopic type |
|
SURVEY |
char[7] |
Survey name |
|
PROGRAM |
char[6] |
DESI program type - BRIGHT, DARK, BACKUP, OTHER |
|
PRIMARY |
logical |
If true this is the primary observation of the source |
HDU2¶
EXTNAME = SPTAB
This is table of measurements by FERRE of coadded DESI spectra. This table combines the measurements from different survey/program pairs. This table has exactly the same length as the RVTAB and matches row by row the RVTAB extension.
Required Header Keywords¶
None
KEY |
Example Value |
Type |
Comment |
|---|---|---|---|
NAXIS1 |
458 |
int |
length of dimension 1 |
NAXIS2 |
625588 |
int |
length of dimension 2 |
Required Data Table Columns¶
Name |
Type |
Units |
Description |
|---|---|---|---|
SUCCESS |
int64 |
Bit indicating whether the code has likely produced useful results |
|
TARGETID |
int64 |
Unique DESI target ID |
|
TARGET_RA |
float64 |
deg |
Target right ascension |
TARGET_DEC |
float64 |
deg |
Target declination |
REF_ID |
int64 |
Tyc1*1,000,000+Tyc2*10+Tyc3 for Tycho-2; sourceid for Gaia DR2 |
|
REF_CAT |
char[2] |
Reference catalog source for star: T2 for Tycho-2, G2 for Gaia DR2, L2 for the SGA, empty otherwise |
|
SRCFILE |
char[24] |
DESI data file |
|
BESTGRID |
char[8] |
Model grid that produced the best fit |
|
TEFF |
float64 |
K |
Effective temperature (K) |
LOGG |
float64 |
Surface gravity (g in cm/s**2) |
|
FEH |
float64 |
Metallicity [Fe/H] = log10(N(Fe)/N(H)) - log10(N(Fe)/N(H))sun |
|
ALPHAFE |
float64 |
Alpha-to-iron ratio [alpha/Fe] |
|
LOG10MICRO |
float64 |
Log10 of Microturbulence (km/s) |
|
PARAM |
float64[5] |
Array of atmospheric parameters ([Fe/H], [a/Fe], log10micro, Teff,logg) |
|
COVAR |
float64[25] |
Covariance matrix for ([Fe/H], [a/Fe], log10micro, Teff,logg) |
|
ELEM |
float64[4] |
Elemental abundance ratios to hydrogen [elem/H] |
|
ELEM_ERR |
float64[4] |
Uncertainties in the elemental abundance ratios |
|
CHISQ_TOT |
float64 |
Total chi**2 |
|
SNR_MED |
float64 |
Median signal-to-ratio |
|
RV_ADOP |
float64 |
km s-1 |
Adopted Radial Velocity (km/s) |
RV_ERR |
float64 |
km s-1 |
Uncertainty in the adopted Radial Velocity (km/s) |
HEALPIX |
int64 |
HEALPixel containing this location at NSIDE=64 in the NESTED scheme |
HDU3¶
EXTNAME = FIBERMAP
FIBERMAP table with information on individual targets copied from original coadd file.
Required Header Keywords¶
None
KEY |
Example Value |
Type |
Comment |
|---|---|---|---|
NAXIS1 |
421 |
int |
length of dimension 1 |
NAXIS2 |
625588 |
int |
length of dimension 2 |
Required Data Table Columns¶
Name |
Type |
Units |
Description |
|---|---|---|---|
TARGETID |
int64 |
Unique DESI target ID |
|
COADD_FIBERSTATUS |
int32 |
bitwise-AND of input FIBERSTATUS |
|
TARGET_RA |
float64 |
deg |
Target right ascension |
TARGET_DEC |
float64 |
deg |
Target declination |
PMRA |
float32 |
mas yr^-1 |
proper motion in the +RA direction (already including cos(dec)) |
PMDEC |
float32 |
mas yr^-1 |
Proper motion in the +Dec direction |
REF_EPOCH |
float32 |
yr |
Reference epoch for Gaia/Tycho astrometry. Typically 2015.5 for Gaia |
FA_TARGET |
int64 |
Targeting bit internally used by fiberassign (linked with FA_TYPE) |
|
FA_TYPE |
binary |
Fiberassign internal target type (science, standard, sky, safe, suppsky) |
|
OBJTYPE |
char[3] |
Object type: TGT, SKY, NON, BAD |
|
SUBPRIORITY |
float64 |
Random subpriority [0-1) to break assignment ties |
|
OBSCONDITIONS |
int32 |
Bitmask of allowed observing conditions |
|
RELEASE |
int16 |
Imaging surveys release ID |
|
BRICKNAME |
char[8] |
Brick name from tractor input |
|
BRICKID |
int32 |
Brick ID from tractor input |
|
BRICK_OBJID |
int32 |
Imaging Surveys OBJID on that brick |
|
MORPHTYPE |
char[4] |
Imaging Surveys morphological type from Tractor |
|
EBV |
float32 |
mag |
Galactic extinction E(B-V) reddening from SFD98 |
FLUX_G |
float32 |
nanomaggy |
Flux in the Legacy Survey g-band (AB) |
FLUX_R |
float32 |
nanomaggy |
Flux in the Legacy Survey r-band (AB) |
FLUX_Z |
float32 |
nanomaggy |
Flux in the Legacy Survey z-band (AB) |
FLUX_W1 |
float32 |
nanomaggy |
WISE flux in W1 (AB) |
FLUX_W2 |
float32 |
nanomaggy |
WISE flux in W2 (AB) |
FLUX_IVAR_G |
float32 |
nanomaggy^-2 |
Inverse variance of FLUX_G (AB) |
FLUX_IVAR_R |
float32 |
nanomaggy^-2 |
Inverse variance of FLUX_R (AB) |
FLUX_IVAR_Z |
float32 |
nanomaggy^-2 |
Inverse variance of FLUX_Z (AB) |
FLUX_IVAR_W1 |
float32 |
nanomaggy^-2 |
Inverse variance of FLUX_W1 (AB) |
FLUX_IVAR_W2 |
float32 |
nanomaggy^-2 |
Inverse variance of FLUX_W2 (AB) |
FIBERFLUX_G |
float32 |
nanomaggy |
Predicted g-band flux within a fiber of diameter 1.5 arcsec from this object in 1 arcsec Gaussian seeing |
FIBERFLUX_R |
float32 |
nanomaggy |
Predicted r-band flux within a fiber of diameter 1.5 arcsec from this object in 1 arcsec Gaussian seeing |
FIBERFLUX_Z |
float32 |
nanomaggy |
Predicted z-band flux within a fiber of diameter 1.5 arcsec from this object in 1 arcsec Gaussian seeing |
FIBERTOTFLUX_G |
float32 |
nanomaggy |
Predicted g-band flux within a fiber of diameter 1.5 arcsec from all sources at this location in 1 arcsec Gaussian seeing |
FIBERTOTFLUX_R |
float32 |
nanomaggy |
Predicted r-band flux within a fiber of diameter 1.5 arcsec from all sources at this location in 1 arcsec Gaussian seeing |
FIBERTOTFLUX_Z |
float32 |
nanomaggy |
Predicted z-band flux within a fiber of diameter 1.5 arcsec from all sources at this location in 1 arcsec Gaussian seeing |
MASKBITS |
int16 |
Bitwise mask from the imaging indicating potential issue or blending |
|
SERSIC |
float32 |
Power-law index for the Sersic profile model (MORPHTYPE=SER) |
|
SHAPE_R |
float32 |
arcsec |
Half-light radius of galaxy model (>0) |
SHAPE_E1 |
float32 |
Ellipticity component 1 of galaxy model for galaxy type MORPHTYPE |
|
SHAPE_E2 |
float32 |
Ellipticity component 2 of galaxy model for galaxy type MORPHTYPE |
|
REF_ID |
int64 |
Tyc1*1,000,000+Tyc2*10+Tyc3 for Tycho-2; sourceid for Gaia DR2 |
|
REF_CAT |
char[2] |
Reference catalog source for star: T2 for Tycho-2, G2 for Gaia DR2, L2 for the SGA, empty otherwise |
|
GAIA_PHOT_G_MEAN_MAG |
float32 |
mag |
Gaia G band magnitude |
GAIA_PHOT_BP_MEAN_MAG |
float32 |
mag |
Gaia BP band magnitude |
GAIA_PHOT_RP_MEAN_MAG |
float32 |
mag |
Gaia RP band magnitude |
PARALLAX |
float32 |
mas |
Reference catalog parallax |
PHOTSYS |
char[1] |
N for the MzLS/BASS photometric system, S for DECaLS |
|
PRIORITY_INIT |
int64 |
Target initial priority from target selection bitmasks and OBSCONDITIONS |
|
NUMOBS_INIT |
int64 |
Initial number of observations for target calculated across target selection bitmasks and OBSCONDITIONS |
|
CMX_TARGET |
int64 |
Target selection bitmask for commissioning |
|
DESI_TARGET |
int64 |
DESI (dark time program) target selection bitmask |
|
BGS_TARGET |
int64 |
BGS (Bright Galaxy Survey) target selection bitmask |
|
MWS_TARGET |
int64 |
Milky Way Survey targeting bits |
|
PLATE_RA |
float64 |
deg |
Right Ascension to be used by PlateMaker |
PLATE_DEC |
float64 |
deg |
Declination to be used by PlateMaker |
COADD_NUMEXP |
int16 |
Number of exposures in coadd |
|
COADD_EXPTIME |
float32 |
s |
Summed exposure time for coadd |
COADD_NUMNIGHT |
int16 |
Number of nights in coadd |
|
COADD_NUMTILE |
int16 |
Number of tiles in coadd |
|
MEAN_DELTA_X |
float32 |
mm |
Mean (over exposures) fiber difference requested - actual CS5 X location on focal plane |
RMS_DELTA_X |
float32 |
mm |
RMS (over exposures) of the fiber difference between measured and requested CS5 X location on focal plane |
MEAN_DELTA_Y |
float32 |
mm |
Mean (over exposures) fiber difference requested - actual CS5 Y location on focal plane |
RMS_DELTA_Y |
float32 |
mm |
RMS (over exposures) of the fiber difference between measured and requested CS5 Y location on focal plane |
MEAN_FIBER_RA |
float64 |
deg |
Mean (over exposures) RA of actual fiber position |
STD_FIBER_RA |
float32 |
arcsec |
Standard deviation (over exposures) of RA of actual fiber position |
MEAN_FIBER_DEC |
float64 |
deg |
Mean (over exposures) DEC of actual fiber position |
STD_FIBER_DEC |
float32 |
arcsec |
Standard deviation (over exposures) of DEC of actual fiber position |
MEAN_PSF_TO_FIBER_SPECFLUX |
float32 |
Mean of input exposures fraction of light from point-like source captured by 1.5 arcsec diameter fiber given atmospheric seeing |
|
SCND_TARGET |
int64 |
Target selection bitmask for secondary programs |
|
SV1_DESI_TARGET |
int64 |
DESI (dark time program) target selection bitmask for SV1 |
|
SV1_BGS_TARGET |
int64 |
BGS (bright time program) target selection bitmask for SV1 |
|
SV1_MWS_TARGET |
int64 |
MWS (bright time program) target selection bitmask for SV1 |
|
SV1_SCND_TARGET |
int64 |
Secondary target selection bitmask for SV1 |
|
SV2_DESI_TARGET |
int64 |
DESI (dark time program) target selection bitmask for SV2 |
|
SV2_BGS_TARGET |
int64 |
BGS (bright time program) target selection bitmask for SV2 |
|
SV2_MWS_TARGET |
int64 |
MWS (bright time program) target selection bitmask for SV2 |
|
SV2_SCND_TARGET |
int64 |
Secondary target selection bitmask for SV2 |
|
SV3_DESI_TARGET |
int64 |
DESI (dark time program) target selection bitmask for SV3 |
|
SV3_BGS_TARGET |
int64 |
BGS (bright time program) target selection bitmask for SV3 |
|
SV3_MWS_TARGET |
int64 |
MWS (bright time program) target selection bitmask for SV3 |
|
SV3_SCND_TARGET |
int64 |
Secondary target selection bitmask for SV3 |
HDU4¶
EXTNAME = SCORES
The table with various quality information about spectra.
Required Header Keywords¶
None
KEY |
Example Value |
Type |
Comment |
|---|---|---|---|
NAXIS1 |
172 |
int |
length of dimension 1 |
NAXIS2 |
625588 |
int |
length of dimension 2 |
Required Data Table Columns¶
Name |
Type |
Units |
Description |
|---|---|---|---|
TARGETID |
int64 |
Unique DESI target ID |
|
INTEG_COADD_FLUX_B |
float32 |
||
MEDIAN_COADD_FLUX_B |
float32 |
||
MEDIAN_COADD_SNR_B |
float32 |
||
INTEG_COADD_FLUX_R |
float32 |
||
MEDIAN_COADD_FLUX_R |
float32 |
||
MEDIAN_COADD_SNR_R |
float32 |
||
INTEG_COADD_FLUX_Z |
float32 |
||
MEDIAN_COADD_FLUX_Z |
float32 |
||
MEDIAN_COADD_SNR_Z |
float32 |
||
TSNR2_GPBDARK_B |
float32 |
||
TSNR2_ELG_B |
float32 |
ELG B template (S/N)^2 |
|
TSNR2_GPBBRIGHT_B |
float32 |
||
TSNR2_LYA_B |
float32 |
LYA B template (S/N)^2 |
|
TSNR2_BGS_B |
float32 |
BGS B template (S/N)^2 |
|
TSNR2_GPBBACKUP_B |
float32 |
||
TSNR2_QSO_B |
float32 |
QSO B template (S/N)^2 |
|
TSNR2_LRG_B |
float32 |
LRG B template (S/N)^2 |
|
TSNR2_GPBDARK_R |
float32 |
||
TSNR2_ELG_R |
float32 |
ELG R template (S/N)^2 |
|
TSNR2_GPBBRIGHT_R |
float32 |
||
TSNR2_LYA_R |
float32 |
LYA R template (S/N)^2 |
|
TSNR2_BGS_R |
float32 |
BGS R template (S/N)^2 |
|
TSNR2_GPBBACKUP_R |
float32 |
||
TSNR2_QSO_R |
float32 |
QSO R template (S/N)^2 |
|
TSNR2_LRG_R |
float32 |
LRG R template (S/N)^2 |
|
TSNR2_GPBDARK_Z |
float32 |
||
TSNR2_ELG_Z |
float32 |
ELG Z template (S/N)^2 |
|
TSNR2_GPBBRIGHT_Z |
float32 |
||
TSNR2_LYA_Z |
float32 |
LYA Z template (S/N)^2 |
|
TSNR2_BGS_Z |
float32 |
BGS Z template (S/N)^2 |
|
TSNR2_GPBBACKUP_Z |
float32 |
||
TSNR2_QSO_Z |
float32 |
QSO Z template (S/N)^2 |
|
TSNR2_LRG_Z |
float32 |
LRG Z template (S/N)^2 |
|
TSNR2_GPBDARK |
float32 |
||
TSNR2_ELG |
float32 |
ELG template (S/N)^2 summed over B,R,Z |
|
TSNR2_GPBBRIGHT |
float32 |
||
TSNR2_LYA |
float32 |
LYA template (S/N)^2 summed over B,R,Z |
|
TSNR2_BGS |
float32 |
BGS template (S/N)^2 summed over B,R,Z |
|
TSNR2_GPBBACKUP |
float32 |
||
TSNR2_QSO |
float32 |
QSO template (S/N)^2 summed over B,R,Z |
|
TSNR2_LRG |
float32 |
LRG template (S/N)^2 summed over B,R,Z |
HDU5¶
EXTNAME = GAIA
The Gaia DR3 measurements for each object in the catalog.
Required Header Keywords¶
None
KEY |
Example Value |
Type |
Comment |
|---|---|---|---|
NAXIS1 |
640 |
int |
length of dimension 1 |
NAXIS2 |
625588 |
int |
length of dimension 2 |
Required Data Table Columns¶
Name |
Type |
Units |
Description |
|---|---|---|---|
SOLUTION_ID |
int64 |
||
DESIGNATION |
char[28] |
||
SOURCE_ID |
int64 |
||
RANDOM_INDEX |
int64 |
||
REF_EPOCH |
float64 |
yr |
Reference epoch for Gaia/Tycho astrometry. Typically 2015.5 for Gaia |
RA |
float64 |
deg |
Target Right Ascension |
RA_ERROR |
float32 |
||
DEC |
float64 |
deg |
Target declination |
DEC_ERROR |
float32 |
||
PARALLAX |
float64 |
mas |
Reference catalog parallax |
PARALLAX_ERROR |
float32 |
||
PARALLAX_OVER_ERROR |
float32 |
||
PM |
float32 |
||
PMRA |
float64 |
mas yr^-1 |
proper motion in the +RA direction (already including cos(dec)) |
PMRA_ERROR |
float32 |
||
PMDEC |
float64 |
mas yr^-1 |
Proper motion in the +Dec direction |
PMDEC_ERROR |
float32 |
||
RA_DEC_CORR |
float32 |
||
RA_PARALLAX_CORR |
float32 |
||
RA_PMRA_CORR |
float32 |
||
RA_PMDEC_CORR |
float32 |
||
DEC_PARALLAX_CORR |
float32 |
||
DEC_PMRA_CORR |
float32 |
||
DEC_PMDEC_CORR |
float32 |
||
PARALLAX_PMRA_CORR |
float32 |
||
PARALLAX_PMDEC_CORR |
float32 |
||
PMRA_PMDEC_CORR |
float32 |
||
ASTROMETRIC_N_OBS_AL |
int16 |
||
ASTROMETRIC_N_OBS_AC |
int16 |
||
ASTROMETRIC_N_GOOD_OBS_AL |
int16 |
||
ASTROMETRIC_N_BAD_OBS_AL |
int16 |
||
ASTROMETRIC_GOF_AL |
float32 |
||
ASTROMETRIC_CHI2_AL |
float32 |
||
ASTROMETRIC_EXCESS_NOISE |
float32 |
||
ASTROMETRIC_EXCESS_NOISE_SIG |
float32 |
||
ASTROMETRIC_PARAMS_SOLVED |
int16 |
||
ASTROMETRIC_PRIMARY_FLAG |
logical |
||
NU_EFF_USED_IN_ASTROMETRY |
float32 |
||
PSEUDOCOLOUR |
float32 |
||
PSEUDOCOLOUR_ERROR |
float32 |
||
RA_PSEUDOCOLOUR_CORR |
float32 |
||
DEC_PSEUDOCOLOUR_CORR |
float32 |
||
PARALLAX_PSEUDOCOLOUR_CORR |
float32 |
||
PMRA_PSEUDOCOLOUR_CORR |
float32 |
||
PMDEC_PSEUDOCOLOUR_CORR |
float32 |
||
ASTROMETRIC_MATCHED_TRANSITS |
int16 |
||
VISIBILITY_PERIODS_USED |
int16 |
||
ASTROMETRIC_SIGMA5D_MAX |
float32 |
||
MATCHED_TRANSITS |
int16 |
||
NEW_MATCHED_TRANSITS |
int16 |
||
MATCHED_TRANSITS_REMOVED |
int16 |
||
IPD_GOF_HARMONIC_AMPLITUDE |
float32 |
||
IPD_GOF_HARMONIC_PHASE |
float32 |
||
IPD_FRAC_MULTI_PEAK |
int16 |
||
IPD_FRAC_ODD_WIN |
int16 |
||
RUWE |
float32 |
||
SCAN_DIRECTION_STRENGTH_K1 |
float32 |
||
SCAN_DIRECTION_STRENGTH_K2 |
float32 |
||
SCAN_DIRECTION_STRENGTH_K3 |
float32 |
||
SCAN_DIRECTION_STRENGTH_K4 |
float32 |
||
SCAN_DIRECTION_MEAN_K1 |
float32 |
||
SCAN_DIRECTION_MEAN_K2 |
float32 |
||
SCAN_DIRECTION_MEAN_K3 |
float32 |
||
SCAN_DIRECTION_MEAN_K4 |
float32 |
||
DUPLICATED_SOURCE |
logical |
||
PHOT_G_N_OBS |
int16 |
||
PHOT_G_MEAN_FLUX |
float64 |
||
PHOT_G_MEAN_FLUX_ERROR |
float32 |
||
PHOT_G_MEAN_FLUX_OVER_ERROR |
float32 |
||
PHOT_G_MEAN_MAG |
float32 |
||
PHOT_BP_N_OBS |
int16 |
||
PHOT_BP_MEAN_FLUX |
float64 |
||
PHOT_BP_MEAN_FLUX_ERROR |
float32 |
||
PHOT_BP_MEAN_FLUX_OVER_ERROR |
float32 |
||
PHOT_BP_MEAN_MAG |
float32 |
||
PHOT_RP_N_OBS |
int16 |
||
PHOT_RP_MEAN_FLUX |
float64 |
||
PHOT_RP_MEAN_FLUX_ERROR |
float32 |
||
PHOT_RP_MEAN_FLUX_OVER_ERROR |
float32 |
||
PHOT_RP_MEAN_MAG |
float32 |
||
PHOT_BP_RP_EXCESS_FACTOR |
float32 |
||
PHOT_BP_N_CONTAMINATED_TRANSITS |
int16 |
||
PHOT_BP_N_BLENDED_TRANSITS |
int16 |
||
PHOT_RP_N_CONTAMINATED_TRANSITS |
int16 |
||
PHOT_RP_N_BLENDED_TRANSITS |
int16 |
||
PHOT_PROC_MODE |
int16 |
||
BP_RP |
float32 |
||
BP_G |
float32 |
||
G_RP |
float32 |
||
RADIAL_VELOCITY |
float32 |
||
RADIAL_VELOCITY_ERROR |
float32 |
||
RV_METHOD_USED |
int16 |
||
RV_NB_TRANSITS |
int16 |
||
RV_NB_DEBLENDED_TRANSITS |
int16 |
||
RV_VISIBILITY_PERIODS_USED |
int16 |
||
RV_EXPECTED_SIG_TO_NOISE |
float32 |
||
RV_RENORMALISED_GOF |
float32 |
||
RV_CHISQ_PVALUE |
float32 |
||
RV_TIME_DURATION |
float32 |
||
RV_AMPLITUDE_ROBUST |
float32 |
||
RV_TEMPLATE_TEFF |
float32 |
||
RV_TEMPLATE_LOGG |
float32 |
||
RV_TEMPLATE_FE_H |
float32 |
||
RV_ATM_PARAM_ORIGIN |
int16 |
||
VBROAD |
float32 |
||
VBROAD_ERROR |
float32 |
||
VBROAD_NB_TRANSITS |
int16 |
||
GRVS_MAG |
float32 |
||
GRVS_MAG_ERROR |
float32 |
||
GRVS_MAG_NB_TRANSITS |
int16 |
||
RVS_SPEC_SIG_TO_NOISE |
float32 |
||
PHOT_VARIABLE_FLAG |
char[20] |
||
L |
float64 |
||
B |
float64 |
||
ECL_LON |
float64 |
||
ECL_LAT |
float64 |
||
IN_QSO_CANDIDATES |
logical |
||
IN_GALAXY_CANDIDATES |
logical |
||
NON_SINGLE_STAR |
int16 |
||
HAS_XP_CONTINUOUS |
logical |
||
HAS_XP_SAMPLED |
logical |
||
HAS_RVS |
logical |
||
HAS_EPOCH_PHOTOMETRY |
logical |
||
HAS_EPOCH_RV |
logical |
||
HAS_MCMC_GSPPHOT |
logical |
||
HAS_MCMC_MSC |
logical |
||
IN_ANDROMEDA_SURVEY |
logical |
||
CLASSPROB_DSC_COMBMOD_QUASAR |
float32 |
||
CLASSPROB_DSC_COMBMOD_GALAXY |
float32 |
||
CLASSPROB_DSC_COMBMOD_STAR |
float32 |
||
TEFF_GSPPHOT |
float32 |
||
TEFF_GSPPHOT_LOWER |
float32 |
||
TEFF_GSPPHOT_UPPER |
float32 |
||
LOGG_GSPPHOT |
float32 |
||
LOGG_GSPPHOT_LOWER |
float32 |
||
LOGG_GSPPHOT_UPPER |
float32 |
||
MH_GSPPHOT |
float32 |
||
MH_GSPPHOT_LOWER |
float32 |
||
MH_GSPPHOT_UPPER |
float32 |
||
DISTANCE_GSPPHOT |
float32 |
||
DISTANCE_GSPPHOT_LOWER |
float32 |
||
DISTANCE_GSPPHOT_UPPER |
float32 |
||
AZERO_GSPPHOT |
float32 |
||
AZERO_GSPPHOT_LOWER |
float32 |
||
AZERO_GSPPHOT_UPPER |
float32 |
||
AG_GSPPHOT |
float32 |
||
AG_GSPPHOT_LOWER |
float32 |
||
AG_GSPPHOT_UPPER |
float32 |
||
EBPMINRP_GSPPHOT |
float32 |
||
EBPMINRP_GSPPHOT_LOWER |
float32 |
||
EBPMINRP_GSPPHOT_UPPER |
float32 |
||
LIBNAME_GSPPHOT |
char[20] |
||
EBV |
float32 |
mag |
Galactic extinction E(B-V) reddening from SFD98 |