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
Download .csv Download .json

AUX and SPECTRA fields (unique to each Data Set)

Data Set: SDSS-DR16, AUX fields

Name Storage Units Description Default All
boss_specobj_id AUX Identification number internal to BOSS for SPECBOSS=1 objects
special_target1 AUX Primary (science) target flags for SDSS-I and SDSS-II special program targets
objid AUX SDSS photometric object identification numbers (RUN, RERUN, CAMCOL, FIELD, ID)
dof AUX Number of degrees of freedom in best fit
calibflux AUX nanomaggy ugriz fluxes used for calibrations
lambda_eff AUX AA Effective wavelength drilling position was optimized for
vdispnpix AUX Number of pixels overlapping the templates used in the velocity dispersion fit
z_person AUX Visual-inspection redshift
spectroflux AUX nanomaggy Spectrum projected onto ugriz filters
xfocal AUX mm Hole position on plate (+X = +RA)
fracnsiglo AUX Fraction of pixels low by more than N sigma relative to best-fit (for 1,2,..,10 sigma)
sn_median AUX Median signal-to-noise per pixel within each of the ugriz bandpasses
anyandmask AUX For each bit, records whether any pixel in the spectrum has that bit set in its ANDMASK
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
elodie_object AUX Star name for ELODIE star
segue1_target2 AUX Primary (science) target flags for SEGUE-1 targets
speclegacy AUX Set to 1 for primary SDSS Legacy program observation of object, 0 otherwise
spectrosynflux_ivar AUX nanomaggy-2 Inverse variance of best-fit template spectrum projected onto ugriz filters
legacy_target1 AUX Primary (science) target flags for SDSS-I and SDSS-II Legacy survey
designid AUX Design identification number for plate
ancillary_target2 AUX BOSS ancillary target selection information at plate design
elodie_rchi2 AUX Reduced chi-squared of fit to best ELODIE star
eboss_target2 AUX eBOSS, TDSS and SPIDERS target selection flags for main eBOSS survey
platequality AUX Final quality of plate this spectrum came from (good, marginal, or bad)
platesn2 AUX Overall signal-to-noise-squared measure for plate (only for SDSS spectrograph plates)

Data Set: SDSS-DR16, 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

Data Set: BOSS-DR16, AUX fields

Name Storage Units Description Default All
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
spectrographid AUX Which spectrograph (1 or 2)
zoffset AUX micron Washer thickness used for backstopping BOSS quasar targets, so they are closer to 4000 Angstrom focal plan
zwarning_noqso AUX Warnings in z_noqso redshift (BOSS spectra only); 0 means everything is OK
z_person AUX Visual-inspection redshift
z_conf_person AUX Visual-inspection confidence (0=not inspected or no confidence, 1,2=low confidence, 3,4=high confidence)
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)
vdisp AUX km s-1 Velocity dispersion
targetobjid AUX Unique database ID of targeting object based on RUN, RERUN, CAMCOl, FIELD, ID (same as SkyServer version)
plateid AUX Unique database ID of plate based on PLATE, MJD, RUN2D (same as SkyServer version)
fluxobjid AUX Unique database ID of flux-based photometric match based on RUN, RERUN, CAMCOl, FIELD, ID (same as SkyServer version)
calibflux AUX nanomaggy ugriz fluxes used for calibrations
tile AUX Tile number (each tile can have several plates drilled for it)
theta AUX Template coefficients of best fit
primtarget AUX Target selection information at plate design, primary science selection (for backwards compatibility)
survey AUX Survey name
sourcetype AUX String expressing type of source (similar to OBJTYPE in DR8 and earlier)
elodie_object AUX Star name for ELODIE star
elodie_z_modelerr AUX Standard deviation in Elodie redshift among the 12 best-fit stars
spectroflux AUX nanomaggy Spectrum projected onto ugriz filters
subclass_noqso AUX Spectroscopic subclassification for Z_NOQSO redshift
class_noqso AUX Spectroscopic classification for Z_NOQSO redshift

Data Set: BOSS-DR16, 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

Data Set: DESI-DR1, AUX fields

Name Storage Units Description Default All
chi2 AUX Best fit chi-squared
bgs_target AUX BGS (Bright Galaxy Survey) target selection bitmask
sv1_bgs_target AUX BGS (bright time program) target selection bitmask for SV1
sv2_bgs_target AUX BGS (bright time program) target selection bitmask for SV2
sv3_bgs_target AUX BGS (bright time program) target selection bitmask for SV3
tsnr2_bgs AUX BGS template (S/N)^2 summed over B,R,Z
obsconditions AUX Bit-coded of allowed observing conditions
coadd_fiberstatus AUX Bitwise AND of the FIBERSTATUS values of the spectra used in the coadd
main_primary AUX Boolean flag (True/False) for the primary coadded spectrum in Main survey
sv_primary AUX Boolean flag (True/False) for the primary coadded spectrum in SV (SV1+2+3)
plate_dec AUX deg Declination to be used by PlateMaker
deltachi2 AUX Delta-chi-squared for template fit from Redrock
desi_target AUX DESI (dark time program) target selection bitmask
sv1_desi_target AUX DESI (dark time program) target selection bitmask for SV1
sv2_desi_target AUX DESI (dark time program) target selection bitmask for SV2
sv3_desi_target AUX DESI (dark time program) target selection bitmask for SV3
desiname AUX DESI JXXX.XXXX[+/-]YY.YYYY where X, Y are TARGET_{RA, DEC} truncated to 4 decimals
program AUX DESI program type - BRIGHT, DARK, BACKUP, OTHER
tsnr2_elg AUX ELG template (S/N)^2 summed over B,R,Z
fa_type AUX Fiberassign internal target type (science, standard, sky, safe, suppsky)
tsnr2_gpbbackup AUX GPBBACKUP template (S/N)^2 summed over BRZ
tsnr2_gpbbright AUX GPBBRIGHT template (S/N)^2 summed over B,R,Z
tsnr2_gpbdark AUX GPBDARK template (S/N)^2 summed over BRZ
healpix AUX HEALPixel containing this location at NSIDE=64 in the NESTED scheme
numobs_init AUX Initial number of observations for target calculated across target selection bitmasks and OBSCONDITIONS

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
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
sv_nspec AUX Number of coadded spectra for this TARGETID in SV (SV1+2+3)
subpriority AUX Random subpriority [0-1] to break assignment ties
tsnr2_lya AUX LYA template (S/N)^2 summed over B,R,Z
coadd_numexp AUX Number of exposures included in the coadd for this target
obsconditions AUX Bit-coded of allowed observing conditions
tsnr2_qso AUX QSO template (S/N)^2 summed over B,R,Z
tsnr2_bgs AUX BGS template (S/N)^2 summed over B,R,Z
tsnr2_elg AUX ELG template (S/N)^2 summed over B,R,Z
sv1_bgs_target AUX BGS (bright time program) target selection bitmask for SV1
sv2_mws_target AUX MWS (bright time program) target selection bitmask for SV2
sv2_scnd_target AUX Secondary target selection bitmask for SV2
sv1_desi_target AUX DESI (dark time program) target selection bitmask for SV1
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
tsnr2_gpbdark AUX GPBDARK template (S/N)^2 summed over BRZ
sv_primary AUX Boolean flag (True/False) for the primary coadded spectrum in SV (SV1+2+3)
sv3_desi_target AUX DESI (dark time program) target selection bitmask for SV3
tsnr2_gpbbackup AUX GPBBACKUP template (S/N)^2 summed over BRZ
survey AUX Survey name
sv3_mws_target AUX MWS (bright time program) target selection bitmask for SV3
zcat_nspec AUX Number of coadded spectra for this TARGETID in this zcatalog
objtype AUX Object type: TGT, SKY, NON, BAD
ncoeff AUX Number of Redrock template coefficients
npixels AUX Number of unmasked wavelengths that contributed to the redshift fit

Data Set: DESI-EDR, 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: 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)