rvmod_spectra¶
- Summary:
This is the file containing the best fit models to spectra from rvspecfit
- Naming Convention:
rvmod_spectra-main-backup-136.fitsfor a main survey, backup program and healpixel 136- 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 |
|
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 |
|
TARGET_RA |
float64 |
deg |
Barycentric right ascension in ICRS |
TARGET_DEC |
float64 |
deg |
Barycentric declination in ICRS |
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 |
LAMBDA_REF |
float32 |
Angstrom |
Requested wavelength at which targets should be centered on fibers |
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 |
|
FIBERASSIGN_X |
float32 |
mm |
Fiberassign expected CS5 X location on focal plane |
FIBERASSIGN_Y |
float32 |
mm |
Fiberassign expected CS5 Y location on focal plane |
PRIORITY |
int32 |
Target current priority |
|
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; |
|
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 |
|
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 |
|
SCND_TARGET |
int64 |
Target selection bitmask for secondary programs |
|
PLATE_RA |
float64 |
deg |
Barycentric Right Ascension in ICRS to be used by PlateMaker |
PLATE_DEC |
float64 |
deg |
Barycentric Declination in ICRS 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 |
EXPTIME |
float64 |
s |
Length of time shutter was open |
PSF_TO_FIBER_SPECFLUX |
float64 |
fraction of light from point-like source captured by 1.5 arcsec diameter fiber given atmospheric seeing |
|
NIGHT |
int32 |
Night of observation (YYYYMMDD) starting at local noon before observations start |
|
EXPID |
int32 |
DESI Exposure ID number |
|
MJD |
float64 |
d |
Modified Julian Date when shutter was opened for this exposure |
TILEID |
int32 |
Unique DESI tile ID |