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

Data Set: BOSS-DR16

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

Data Set: DESI-EDR

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
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)
firstnight AUX First calendar date of the exposures used in the coadded spectrum as YYYYMMDD of the beginning of the observing night
flux SPECTRA 10^-17 ergs/s/cm^2/Å Coadded calibrated flux
healpix AUX HEALPixel containing this location at NSIDE=64 in the NESTED scheme
ivar SPECTRA flux^-2 Inverse variance of flux
lastnight AUX Last calendar date of the exposures used in the coadded spectrum as YYYYMMDD of the beginning of the observing night
mask SPECTRA Mask value
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 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
model SPECTRA 10^-17 ergs/s/cm^2/Å Pipeline best model fit

Data Set: SDSS-DR16

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 nanomaggies ugriz fluxes used for calibrations
calibflux_ivar AUX nanomaggies^-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_target0 AUX SEQUELS, TDSS and SPIDERS target selection flags
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