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¶
Required Header Keywords Table
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¶
Required Header Keywords Table
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¶
Required Header Keywords Table
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¶
Required Header Keywords Table
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¶
Required Header Keywords Table
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¶
Required Header Keywords Table
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¶
Required Header Keywords Table
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¶
Required Header Keywords Table
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 |