SPARCL - SPARCL Field Catalog (SFC)

SPARCL Field Catalog

List of Fields available via Retrieve

CORE fields (common to all Data Sets)

Name Storage Units Description Default All
ra CORE deg Right Ascension in degrees
dateobs CORE Range of observational dates for a given spectrum (single value for a single date)
redshift_warning CORE Bitmask with warning on redshift result
dateobs_center CORE Central value of the dateobs range
updated CORE Date and time when the record was created/updated
site CORE [Categorical] Site of observations
datasetgroup CORE [Categorical] Common name for a coherent set of spectra published as a single release (e.g., SDSS_BOSS)
specid CORE Dataset-specific spectrum identifier (may not be unique)
instrument CORE [Categorical] Instrument used for observation
redshift CORE Measured redshift, or radial velocity in units of redshift
targetid CORE Dataset-specific photometric target identifier
specprimary CORE Whether an entry is the primary spectrum for a given target object
data_release CORE [Categorical] Data release of a given record (with a common data structure, e.g., SDSS-DR16, BOSS-DR16)
wavemin CORE AA Minimum value of wavelength coverage in Angstroms
spectype CORE [Categorical] Spectral type of the object (STAR, GALAXY, QSO)
dec CORE deg Declination in degrees
telescope CORE [Categorical] Telescope used for the observation
redshift_err CORE Uncertainty on the measured redshift, or radial velocity in units of redshift
wavemax CORE AA Maximum value of wavelength coverage in Angstroms
sparcl_id CORE Universally Unique Identifier for spectrum in SPARCL
extra_files CORE Additional files read for ingest
exptime CORE second Exposure time in seconds
file CORE File used for this record
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AUX and SPECTRA fields (unique to each Data Set)

Data Set: SDSS-DR16, AUX fields

Name Storage Units Description Default All
dof AUX Number of degrees of freedom in best fit
designid AUX Design identification number for plate
deredsn2 AUX Dereddened overall signal-to-noise-squared measure for plate (only for BOSS spectrograph plates)
cz AUX z of Normal unit vector in J2000
cy AUX y of Normal unit vector in J2000
cx AUX x of Normal unit vector in J2000
comments_person AUX Visual-inspection comments
class_person AUX Visual-inspection classification (0=not inspected or unknown, 1=star, 2=narrow emission-line galaxy, 3=QSO, 4=galaxy)
class_noqso AUX Spectroscopic classification for Z_NOQSO redshift
chunk AUX Name of tiling chunk that this spectrum was tiled in (boss1, boss2, etc), important for tracking large-scale structure samples
chi68p AUX 68-th percentile value of abs(chi) of the best-fit synthetic spectrum to the actual spectrum (around 1.0 for a good fit)
calibflux_ivar AUX nanomaggy-2 Inverse variances of ugriz fluxes used for calibrations
calibflux AUX nanomaggy ugriz fluxes used for calibrations
boss_target2 AUX Always set to zero (placeholder for BOSS target flags never used)
boss_target1 AUX Primary (science) target flags for BOSS targets
boss_specobj_id AUX Identification number internal to BOSS for SPECBOSS=1 objects
bluefiber AUX Set to 1 if this hole was designated a blue fiber, 0 if designated a red fiber (high redshift LRGs are preferentially in red fibers)
anyormask AUX For each bit, records whether any pixel in the spectrum has that bit set in its ORMASK
anyandmask AUX For each bit, records whether any pixel in the spectrum has that bit set in its ANDMASK
ancillary_target2 AUX BOSS ancillary target selection information at plate design
ancillary_target1 AUX BOSS ancillary science target selection information at plate design

Data Set: SDSS-DR16, SPECTRA fields

Name Storage Units Description Default All
sky SPECTRA 1e-17 erg cm-2 s-1 AA-1 Subtracted sky flux
flux SPECTRA 1e-17 erg cm-2 s-1 AA-1 Coadded calibrated flux
model SPECTRA 1e-17 erg cm-2 s-1 AA-1 Pipeline best model fit used for classification and redshift
ivar SPECTRA 1e+34 cm4 s2 AA2 erg-2 Inverse variance of flux
wavelength SPECTRA AA Wavelength in units of Angstroms
wave_sigma SPECTRA pixel Line-spread function width (sigma of approximating Gaussian) in units of number of pixel
mask SPECTRA and_mask

Data Set: BOSS-DR16, AUX fields

Name Storage Units Description Default All
subclass_noqso AUX Spectroscopic subclassification for Z_NOQSO redshift
subclass AUX Best spectroscopic subclassification
spectrosynflux_ivar AUX nanomaggy-2 Inverse variance of best-fit template spectrum projected onto ugriz filters
spectrosynflux AUX nanomaggy Best-fit template spectrum projected onto ugriz filters
spectroskyflux AUX nanomaggy Sky flux in each of the ugriz imaging filters
spectrographid AUX Which spectrograph (1 or 2)
spectroflux_ivar AUX nanomaggy-2 Inverse variance of spectrum projected onto ugriz filters
spectroflux AUX nanomaggy Spectrum projected onto ugriz filters
specsegue2 AUX Set to 1 for primary SDSS SEGUE-2 program observation of object, 0 otherwise
specsegue1 AUX Set to 1 for primary SDSS SEGUE-1 program observation of object, 0 otherwise
specsegue AUX Set to 1 for primary SDSS SEGUE program observation of object (including SEGUE-1 and SEGUE-2), 0 otherwise
specsdss AUX Set to 1 for primary SDSS spectrograph observation of object, 0 otherwise
speclegacy AUX Set to 1 for primary SDSS Legacy program observation of object, 0 otherwise
special_target2 AUX Secondary (calibration) target flags for SDSS-I and SDSS-II special program targets
special_target1 AUX Primary (science) target flags for SDSS-I and SDSS-II special program targets
specboss AUX Set to 1 for primary BOSS spectrograph observation of object, 0 otherwise
spec2_r AUX Signal-to-noise squared for spectrograph #2, at r=20.25 for SDSS spectrograph spectra, r=20.20 for BOSS spectrograph spectra
spec2_i AUX Signal-to-noise squared for spectrograph #2, at i=19.90 for SDSS spectrograph spectra, i=20.20 for BOSS spectrograph spectra
spec2_g AUX Signal-to-noise squared for spectrograph #2, at g=20.20 for SDSS spectrograph spectra, g=21.20 for BOSS spectrograph spectra
spec1_r AUX Signal-to-noise squared for spectrograph #1, at r=20.25 for SDSS spectrograph spectra, r=20.20 for BOSS spectrograph spectra
spec1_i AUX Signal-to-noise squared for spectrograph #1, at i=19.90 for SDSS spectrograph spectra, i=20.20 for BOSS spectrograph spectra
spec1_g AUX Signal-to-noise squared for spectrograph #1, at g=20.20 for SDSS spectrograph spectra, g=21.20 for BOSS spectrograph spectra
sourcetype AUX String expressing type of source (similar to OBJTYPE in DR8 and earlier)
snturnoff AUX Signal to noise measure for MS turnoff stars on plate (-9999 if not appropriate)
sn_median_all AUX Median signal-to-noise per pixel across full spectrum

Data Set: BOSS-DR16, SPECTRA fields

Name Storage Units Description Default All
wave_sigma SPECTRA pixel Line-spread function width (sigma of approximating Gaussian) in units of number of pixel
wavelength SPECTRA AA Wavelength in units of Angstroms
sky SPECTRA 1e-17 erg cm-2 s-1 AA-1 Subtracted sky flux
model SPECTRA 1e-17 erg cm-2 s-1 AA-1 Pipeline best model fit used for classification and redshift
mask SPECTRA and_mask
ivar SPECTRA 1e+34 cm4 s2 AA2 erg-2 Inverse variance of flux
flux SPECTRA 1e-17 erg cm-2 s-1 AA-1 Coadded calibrated flux

Data Set: DESI-DR1, AUX fields

Name Storage Units Description Default All
bgs_target AUX BGS (Bright Galaxy Survey) target selection bitmask
chi2 AUX Best fit chi-squared
cmx_target AUX Target selection bitmask for commissioning
coadd_fiberstatus AUX Bitwise AND of the FIBERSTATUS values of the spectra used in the coadd
coadd_numexp AUX Number of exposures included in the coadd for this target
coadd_numnight AUX Number of different nights included in the coadd for this target
coadd_numtile AUX Number of different tiles included in the coadd for this target
coeff AUX Redrock template coefficients
deltachi2 AUX Delta-chi-squared for template fit from Redrock
desiname AUX DESI JXXX.XXXX[+/-]YY.YYYY where X, Y are TARGET_{RA, DEC} truncated to 4 decimals
desi_target AUX DESI (dark time program) target selection bitmask
fa_target AUX Targeting bit internally used by fiberassign (linked with FA_TYPE)
fa_type AUX Fiberassign internal target type (science, standard, sky, safe, suppsky)
healpix AUX HEALPixel containing this location at NSIDE=64 in the NESTED scheme
main_nspec AUX Number of coadded spectra for this TARGETID in Main survey
main_primary AUX Boolean flag (True/False) for the primary coadded spectrum in Main survey
mean_delta_x AUX mm Mean (over exposures) fiber difference between measured and requested CS5 X location on focal plane
mean_delta_y AUX mm Mean (over exposures) fiber difference requested - actual CS5 Y location on focal plane
mean_fiber_dec AUX deg Mean (over exposures) DEC of actual fiber position
mean_fiber_ra AUX deg Mean (over exposures) RA of actual fiber position
mean_mjd AUX days Mean (over exposures) of the Modified Julian Date (MJD) when the shutter was opened
mean_psf_to_fiber_specflux AUX Mean of input exposures fraction of light from point-like source captured by 1.5 arcsec diameter fiber given atmospheric seeing
mws_target AUX Milky Way Survey targeting bits
ncoeff AUX Number of Redrock template coefficients
npixels AUX Number of unmasked wavelengths that contributed to the redshift fit

Data Set: DESI-DR1, SPECTRA fields

Name Storage Units Description Default All
flux SPECTRA 1e-17 erg cm-2 s-1 AA-1 Coadded calibrated flux
ivar SPECTRA 1e+34 cm4 s2 AA2 erg-2 Inverse variance of flux
mask SPECTRA Mask value
model SPECTRA 1e-17 erg cm-2 s-1 AA-1 Pipeline best model fit
wavelength SPECTRA AA Wavelength in units of Angstroms
wave_sigma SPECTRA AA Line-spread function width (sigma of approximating Gaussian) in units of Angstroms

Data Set: DESI-EDR, AUX fields

Name Storage Units Description Default All
spgrpval AUX Value corresponding to the grouping type indicated in the spgrp column. This is the same as the healpix column
scnd_target AUX Target selection bitmask for secondary programs
cmx_target AUX Target selection bitmask for commissioning
priority_init AUX Target initial priority from target selection bitmasks and OBSCONDITIONS
fa_target AUX Targeting bit internally used by fiberassign (linked with FA_TYPE)
survey AUX Survey name
std_fiber_ra AUX arcsec Standard deviation (over exposures) of RA of actual fiber position
std_fiber_dec AUX arcsec Standard deviation (over exposures) of DEC of actual fiber position
subtype AUX Spectral subtype
sv3_scnd_target AUX Secondary target selection bitmask for SV3
sv2_scnd_target AUX Secondary target selection bitmask for SV2
sv1_scnd_target AUX Secondary target selection bitmask for SV1
rms_delta_y AUX mm RMS (over exposures) of the fiber difference between measured and requested CS5 Y location on focal plane
rms_delta_x AUX mm RMS (over exposures) of the fiber difference between measured and requested CS5 X location on focal plane
plate_ra AUX deg Right Ascension to be used by PlateMaker
ref_epoch AUX year Reference epoch for Gaia/Tycho astrometry. Typically 2015.5 for Gaia
pmra AUX mas year-1 Reference catalog proper motion in the RA direction
pmdec AUX mas year-1 Reference catalog proper motion in the Dec direction
coeff AUX Redrock template coefficients
subpriority AUX Random subpriority [0-1] to break assignment ties
tsnr2_qso AUX QSO template (S/N)^2 summed over B,R,Z
objtype AUX Object type: TGT, SKY, NON, BAD
npixels AUX Number of unmasked wavelengths that contributed to the redshift fit
ncoeff AUX Number of Redrock template coefficients
coadd_numexp AUX Number of exposures included in the coadd for this target

Data Set: DESI-EDR, SPECTRA fields

Name Storage Units Description Default All
model SPECTRA 1e-17 erg cm-2 s-1 AA-1 Pipeline best model fit
flux SPECTRA 1e-17 erg cm-2 s-1 AA-1 Coadded calibrated flux
ivar SPECTRA 1e+34 cm4 s2 AA2 erg-2 Inverse variance of flux
wavelength SPECTRA AA Wavelength in units of Angstroms
wave_sigma SPECTRA AA Line-spread function width (sigma of approximating Gaussian) in units of Angstroms
mask SPECTRA Mask value

Data Set: SDSS-DR17-test, AUX fields

Name Storage Units Description Default All
ancillary_target1 AUX BOSS ancillary science target selection information at plate design
ancillary_target2 AUX BOSS ancillary target selection information at plate design
anyandmask AUX For each bit, records whether any pixel in the spectrum has that bit set in its ANDMASK
anyormask AUX For each bit, records whether any pixel in the spectrum has that bit set in its ORMASK
bluefiber AUX Set to 1 if this hole was designated a blue fiber, 0 if designated a red fiber (high redshift LRGs are preferentially in red fibers)
boss_specobj_id AUX Identification number internal to BOSS for SPECBOSS=1 objects
boss_target1 AUX Primary (science) target flags for BOSS targets
boss_target2 AUX Always set to zero (placeholder for BOSS target flags never used)
calibflux AUX nanomaggy ugriz fluxes used for calibrations
calibflux_ivar AUX nanomaggy-2 Inverse variances of ugriz fluxes used for calibrations
chi68p AUX 68-th percentile value of abs(chi) of the best-fit synthetic spectrum to the actual spectrum (around 1.0 for a good fit)
chunk AUX Name of tiling chunk that this spectrum was tiled in (boss1, boss2, etc), important for tracking large-scale structure samples
class_noqso AUX Spectroscopic classification for Z_NOQSO redshift
class_person AUX Visual-inspection classification (0=not inspected or unknown, 1=star, 2=narrow emission-line galaxy, 3=QSO, 4=galaxy)
comments_person AUX Visual-inspection comments
cx AUX x of Normal unit vector in J2000
cy AUX y of Normal unit vector in J2000
cz AUX z of Normal unit vector in J2000
deredsn2 AUX Dereddened overall signal-to-noise-squared measure for plate (only for BOSS spectrograph plates)
designid AUX Design identification number for plate
dof AUX Number of degrees of freedom in best fit
eboss_target1 AUX eBOSS, TDSS and SPIDERS target selection flags for main eBOSS survey
eboss_target2 AUX eBOSS, TDSS and SPIDERS target selection flags for main eBOSS survey
eboss_target_id AUX EBOSS unique target identifier for every spectroscopic target
elodie_bv AUX mag (B-V) color index for ELODIE star

Data Set: SDSS-DR17-test, SPECTRA fields

Name Storage Units Description Default All
flux SPECTRA 1e-17 erg cm-2 s-1 AA-1 Coadded calibrated flux
ivar SPECTRA 1e+34 cm4 s2 AA2 erg-2 Inverse variance of flux
mask SPECTRA and_mask
model SPECTRA 1e-17 erg cm-2 s-1 AA-1 Pipeline best model fit used for classification and redshift
sky SPECTRA 1e-17 erg cm-2 s-1 AA-1 Subtracted sky flux
wavelength SPECTRA AA Wavelength in units of Angstroms
wave_sigma SPECTRA pixel Line-spread function width (sigma of approximating Gaussian) in units of number of pixel
SPARCL Field Cat(alog)