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 ✘ ✘
updated CORE — Date and time when the record was created/updated ✘ ✘
file CORE — File used for this record ✘ ✘
dateobs_center CORE — Central value of the dateobs range ✘ ✔
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 ✘ ✔
ra CORE deg Right Ascension in degrees ✔ ✔
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 ✔ ✔
exptime CORE second Exposure time in seconds ✘ ✔
specprimary CORE — Whether an entry is the primary spectrum for a given target object ✘ ✔
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 ✘ ✔
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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
lambda_eff AUX AA Effective wavelength drilling position was optimized for ✘ ✔
mjd AUX days Modified Julian Day of observation ✘ ✔
elodie_teff AUX Kelvin Effective temperature of ELODIE star ✘ ✔
vdisp AUX km s-1 Velocity dispersion ✘ ✔
vdisp_err AUX km s-1 Error in velocity dispersion ✘ ✔
elodie_bv AUX mag (B-V) color index for ELODIE star ✘ ✔
zoffset AUX micron Washer thickness used for backstopping BOSS quasar targets, so they are closer to 4000 Angstrom focal plan ✘ ✔
yfocal AUX mm Hole position on plate (+Y = +DEC) ✘ ✔
xfocal AUX mm Hole position on plate (+X = +RA) ✘ ✔
calibflux AUX nanomaggy ugriz fluxes used for calibrations ✘ ✔
spectroflux AUX nanomaggy 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 ✘ ✔
spectroflux_ivar AUX nanomaggy-2 Inverse variance of spectrum projected onto ugriz filters ✘ ✔
spectrosynflux_ivar AUX nanomaggy-2 Inverse variance of best-fit template spectrum projected onto ugriz filters ✘ ✔
calibflux_ivar AUX nanomaggy-2 Inverse variances of ugriz fluxes used for calibrations ✘ ✔
cz AUX — z of Normal unit vector in J2000 ✘ ✔
special_target2 AUX — Secondary (calibration) target flags for SDSS-I and SDSS-II special program targets ✘ ✔
eboss_target_id AUX — EBOSS unique target identifier for every spectroscopic target ✘ ✔
thing_id AUX — Resolve THING_ID in SDSS imaging for best positional match ✘ ✔
run1d AUX — Spectroscopic 1D reduction (redshift and classification) name ✘ ✔
targetobjid AUX — Unique database ID of targeting object based on RUN, RERUN, CAMCOl, FIELD, ID (same as SkyServer version) ✘ ✔
targettype AUX — General type of target (SCIENCE, STANDARD, or SKY) ✘ ✔
legacy_target2 AUX — Secondary (calibration) target flags for SDSS-I and SDSS-II Legacy survey ✘ ✔
spectrographid AUX — Which spectrograph (1 or 2) ✘ ✔

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
nspecobs AUX — Number of spectroscopic observations of this source ✘ ✔
nturnoff AUX — Number of stars used for SNTURNOFF determination ✘ ✔
objid AUX — SDSS photometric object identification numbers (RUN, RERUN, CAMCOL, FIELD, ID) ✘ ✔
plate AUX — Plate number (each plate corresponds to an actual plug plate) ✘ ✔
plateid AUX — Unique database ID of plate based on PLATE, MJD, RUN2D (same as SkyServer version) ✘ ✔
platequality AUX — Final quality of plate this spectrum came from (good, marginal, or bad) ✘ ✔
platerun AUX — Drilling run that this plate was drilled in ✘ ✔
platesn2 AUX — Overall signal-to-noise-squared measure for plate (only for SDSS spectrograph plates) ✘ ✔
primtarget AUX — Target selection information at plate design, primary science selection (for backwards compatibility) ✘ ✔
programname AUX — Program within each survey that the plate was part of ✘ ✔
rchi2 AUX — Reduced chi-squared of best fit ✘ ✔
rchi2diff AUX — Difference in reduced chi-squared between best and second best fit ✘ ✔
rchi2diff_noqso AUX — Difference in reduced chi-squared between best and second best fit for Z_NOQSO redshift ✘ ✔
run1d AUX — Spectroscopic 1D reduction (redshift and classification) name ✘ ✔
run2d AUX — Spectroscopic 2D reduction (extraction of spectra) name ✘ ✔
sectarget AUX — Deprecated version of secondary (calibration) target flags (meanings highly overloaded) ✘ ✔
segue1_target1 AUX — Primary (science) target flags for SEGUE-1 targets ✘ ✔
segue1_target2 AUX — Secondary (calibration) target flags for SEGUE-1 targets ✘ ✔
segue2_target1 AUX — Primary (science) target flags for SEGUE-2 targets ✘ ✔
segue2_target2 AUX — Secondary (calibration) target flags for SEGUE-2 targets ✘ ✔
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 ✘ ✔

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
sv2_mws_target AUX — MWS (bright time program) target selection bitmask for SV2 ✘ ✔
sv2_scnd_target AUX — Secondary target selection bitmask for SV2 ✘ ✔
sv3_bgs_target AUX — BGS (bright time program) target selection bitmask for SV3 ✘ ✔
sv3_desi_target AUX — DESI (dark time program) target selection bitmask for SV3 ✘ ✔
sv3_mws_target AUX — MWS (bright time program) target selection bitmask for SV3 ✘ ✔
sv3_scnd_target AUX — Secondary target selection bitmask for SV3 ✘ ✔
sv_nspec AUX — Number of coadded spectra for this TARGETID in SV (SV1+2+3) ✘ ✔
sv_primary AUX — Boolean flag (True/False) for the primary coadded spectrum in SV (SV1+2+3) ✘ ✔
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 ✘ ✔
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 ✘ ✔
tsnr2_lrg AUX — LRG template (S/N)^2 summed over B,R,Z ✘ ✔
tsnr2_lya AUX — LYA template (S/N)^2 summed over B,R,Z ✘ ✔
tsnr2_qso AUX — QSO template (S/N)^2 summed over B,R,Z ✘ ✔
zcat_nspec AUX — Number of coadded spectra for this TARGETID in this zcatalog ✘ ✔

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
std_fiber_dec AUX arcsec Standard deviation (over exposures) of DEC of actual fiber position ✘ ✔
std_fiber_ra AUX arcsec Standard deviation (over exposures) of RA of actual fiber position ✘ ✔
mean_mjd AUX days Mean (over exposures) of the Modified Julian Date (MJD) when the shutter was opened ✘ ✔
plate_dec AUX deg Declination to be used by PlateMaker ✘ ✔
mean_fiber_ra AUX deg Mean (over exposures) RA of actual fiber position ✘ ✔
plate_ra AUX deg Right Ascension to be used by PlateMaker ✘ ✔
mean_fiber_dec AUX deg Mean (over exposures) DEC of actual fiber position ✘ ✔
pmdec AUX mas year-1 Reference catalog proper motion in the Dec direction ✘ ✔
pmra AUX mas year-1 Reference catalog proper motion in the RA direction ✘ ✔
mean_delta_x AUX mm Mean (over exposures) fiber difference between measured and requested CS5 X location on focal plane ✘ ✔
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 ✘ ✔
mean_delta_y AUX mm Mean (over exposures) fiber difference requested - actual CS5 Y location on focal plane ✘ ✔
ref_epoch AUX year Reference epoch for Gaia/Tycho astrometry. Typically 2015.5 for Gaia ✘ ✔
coadd_numnight AUX — Number of different nights included in the coadd for this target ✘ ✔
coeff AUX — Redrock template coefficients ✘ ✔
program AUX — DESI program type - BRIGHT, DARK, BACKUP, OTHER ✘ ✔
coadd_numtile AUX — Number of different tiles included in the coadd for this target ✘ ✔
cmx_target AUX — Target selection bitmask for commissioning ✘ ✔
deltachi2 AUX — Delta-chi-squared for template fit from Redrock ✘ ✔
sv1_scnd_target AUX — Secondary target selection bitmask for SV1 ✘ ✔
sv3_bgs_target AUX — BGS (bright time program) target selection bitmask for SV3 ✘ ✔
subtype AUX — Spectral subtype ✘ ✔
sv3_scnd_target AUX — Secondary target selection bitmask for SV3 ✘ ✔
numobs_init AUX — Initial number of observations for target calculated across target selection bitmasks and OBSCONDITIONS ✘ ✔

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)

NSF NOIRLab

AURA CSDC


For further information, contact:
datalab-spectro@noirlab.edu
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