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

AUX and SPECTRA fields (unique to each Data Set)

Data Set: BOSS-DR16, AUX fields

Name Storage Units Description Default All
targetobjid AUX Unique database ID of targeting object based on RUN, RERUN, CAMCOl, FIELD, ID (same as SkyServer version)
class_person AUX Visual-inspection classification (0=not inspected or unknown, 1=star, 2=narrow emission-line galaxy, 3=QSO, 4=galaxy)
platerun AUX Drilling run that this plate was drilled in
fracnsiglo AUX Fraction of pixels low by more than N sigma relative to best-fit (for 1,2,..,10 sigma)
spectrographid AUX Which spectrograph (1 or 2)
eboss_target0 AUX SEQUELS, TDSS and SPIDERS target selection flags
elodie_teff AUX Kelvin Effective temperature of ELODIE star
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)
plate AUX Plate number (each plate corresponds to an actual plug plate)
vdispnpix AUX Number of pixels overlapping the templates used in the velocity dispersion fit
chunk AUX Name of tiling chunk that this spectrum was tiled in (boss1, boss2, etc), important for tracking large-scale structure samples
sectarget AUX Deprecated version of secondary (calibration) target flags (meanings highly overloaded)
speclegacy AUX Set to 1 for primary SDSS Legacy program observation of object, 0 otherwise
firstrelease AUX Name of first release this PLATE, MJD, FIBERID, RUN2D was associated with
eboss_target2 AUX eBOSS, TDSS and SPIDERS target selection flags for main eBOSS survey
rchi2 AUX Reduced chi-squared of best fit
vdispdof AUX Number of degrees of freedom in velocity dispersion fit
deredsn2 AUX Dereddened overall signal-to-noise-squared measure for plate (only for BOSS spectrograph plates)
segue1_target1 AUX Primary (science) target flags for SEGUE-1 targets
mjd AUX days Modified Julian Day of observation
platequality AUX Final quality of plate this spectrum came from (good, marginal, or bad)
class_noqso AUX Spectroscopic classification for Z_NOQSO redshift
calibflux_ivar AUX nanomaggy-2 Inverse variances of ugriz fluxes used for calibrations
spectroflux_ivar AUX nanomaggy-2 Inverse variance of spectrum projected onto ugriz filters
fracnsighi AUX Fraction of pixels high by more than N sigma relative to best-fit (for 1,2,..,10 sigma)

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: 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: SDSS-DR17-test, AUX fields

Name Storage Units Description Default All
elodie_dof AUX Degrees of freedom in fit to best ELODIE star
elodie_feh AUX Metallicity [Fe/H] of ELODIE star
elodie_filename AUX File name for best-fit ELODIE star
elodie_logg AUX log10(gravity) of ELODIE star
elodie_object AUX Star name for ELODIE star
elodie_rchi2 AUX Reduced chi-squared of fit to best ELODIE star
elodie_sptype AUX ELODIE star spectral type
elodie_teff AUX Kelvin Effective temperature of ELODIE star
elodie_z AUX Redshift fit to ELODIE star
elodie_z_err AUX Error in redshift fit to ELODIE star
elodie_z_modelerr AUX Standard deviation in redshift among the 12 best-fit ELODIE stars
fiberid AUX Fiber number
firstrelease AUX Name of first release this PLATE, MJD, FIBERID, RUN2D was associated with
fluxobjid AUX Unique database ID of flux-based photometric match based on RUN, RERUN, CAMCOl, FIELD, ID (same as SkyServer version)
fracnsighi AUX Fraction of pixels high by more than N sigma relative to best-fit (for 1,2,..,10 sigma)
fracnsiglo AUX Fraction of pixels low by more than N sigma relative to best-fit (for 1,2,..,10 sigma)
fracnsigma AUX Fraction of pixels deviant by more than N sigma relative to best-fit (for 1,2,..,10 sigma)
lambda_eff AUX AA Effective wavelength drilling position was optimized for
legacy_target1 AUX Primary (science) target flags for SDSS-I and SDSS-II Legacy survey
legacy_target2 AUX Secondary (calibration) target flags for SDSS-I and SDSS-II Legacy survey
marvels_target1 AUX Primary (science) target flags for MARVELS targets
marvels_target2 AUX Secondary (calibration) target flags for MARVELS targets
mjd AUX days Modified Julian Day of observation
npoly AUX Number of polynomial terms in fit
nspecobs AUX Number of spectroscopic observations of this source

Data Set: SDSS-DR17-test, 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: 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
deltachi2 AUX Delta-chi-squared for template fit from Redrock
mws_target AUX Milky Way Survey targeting bits
tsnr2_gpbbright AUX GPBBRIGHT template (S/N)^2 summed over B,R,Z
rms_delta_y AUX mm RMS (over exposures) of the fiber difference between measured and requested CS5 Y location on focal plane
coeff AUX Redrock template coefficients
sv2_desi_target AUX DESI (dark time program) target selection bitmask for SV2
coadd_fiberstatus AUX Bitwise AND of the FIBERSTATUS values of the spectra used in the coadd
chi2 AUX Best fit chi-squared
subtype AUX Spectral subtype
cmx_target AUX Target selection bitmask for commissioning
program AUX DESI program type - BRIGHT, DARK, BACKUP, OTHER
objtype AUX Object type: TGT, SKY, NON, BAD
mean_delta_x AUX mm Mean (over exposures) fiber difference between measured and requested CS5 X location on focal plane
coadd_numnight AUX Number of different nights included in the coadd for this target
tsnr2_lrg AUX LRG template (S/N)^2 summed over B,R,Z
sv2_bgs_target AUX BGS (bright time program) target selection bitmask for SV2
bgs_target AUX BGS (Bright Galaxy Survey) target selection bitmask
fa_target AUX Targeting bit internally used by fiberassign (linked with FA_TYPE)
numobs_init AUX Initial number of observations for target calculated across target selection bitmasks and OBSCONDITIONS
rms_delta_x AUX mm RMS (over exposures) of the fiber difference between measured and requested CS5 X location on focal plane
sv3_bgs_target AUX BGS (bright time program) target selection bitmask for SV3
sv1_scnd_target AUX Secondary target selection bitmask for SV1
coadd_numtile AUX Number of different tiles included in the coadd for this target
sv3_scnd_target AUX Secondary target selection bitmask for SV3

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
SPARCL Field Cat(alog)