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
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_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 ✘ ✔

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
fracnsighi AUX — Fraction of pixels high by more than N sigma relative to best-fit (for 1,2,..,10 sigma) ✘ ✔
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 ✘ ✔

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
zcat_nspec AUX — Number of coadded spectra for this TARGETID in this zcatalog ✘ ✔
tsnr2_qso AUX — QSO template (S/N)^2 summed over B,R,Z ✘ ✔
tsnr2_lya AUX — LYA template (S/N)^2 summed over B,R,Z ✘ ✔
tsnr2_lrg AUX — LRG template (S/N)^2 summed over B,R,Z ✘ ✔
tsnr2_gpbdark AUX — GPBDARK template (S/N)^2 summed over BRZ ✘ ✔
tsnr2_gpbbright AUX — GPBBRIGHT template (S/N)^2 summed over B,R,Z ✘ ✔
tsnr2_gpbbackup AUX — GPBBACKUP template (S/N)^2 summed over BRZ ✘ ✔
tsnr2_elg AUX — ELG template (S/N)^2 summed over B,R,Z ✘ ✔
tsnr2_bgs AUX — BGS template (S/N)^2 summed over B,R,Z ✘ ✔
sv_primary AUX — Boolean flag (True/False) for the primary coadded spectrum in SV (SV1+2+3) ✘ ✔
sv_nspec AUX — Number of coadded spectra for this TARGETID in SV (SV1+2+3) ✘ ✔
sv3_scnd_target AUX — Secondary target selection bitmask for SV3 ✘ ✔
sv3_mws_target AUX — MWS (bright time program) target selection bitmask for SV3 ✘ ✔
sv3_desi_target AUX — DESI (dark time program) target selection bitmask for SV3 ✘ ✔
sv3_bgs_target AUX — BGS (bright time program) target selection bitmask for SV3 ✘ ✔
sv2_scnd_target AUX — Secondary target selection bitmask for SV2 ✘ ✔
sv2_mws_target AUX — MWS (bright time program) target selection bitmask for SV2 ✘ ✔
sv2_desi_target AUX — DESI (dark time program) target selection bitmask for SV2 ✘ ✔
sv2_bgs_target AUX — BGS (bright time program) target selection bitmask for SV2 ✘ ✔
sv1_scnd_target AUX — Secondary target selection bitmask for SV1 ✘ ✔
sv1_mws_target AUX — MWS (bright time program) target selection bitmask for SV1 ✘ ✔
sv1_desi_target AUX — DESI (dark time program) target selection bitmask for SV1 ✘ ✔
sv1_bgs_target AUX — BGS (bright time program) target selection bitmask for SV1 ✘ ✔
survey AUX — Survey name ✘ ✔
subtype AUX — Spectral subtype ✘ ✔

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
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 ✘ ✔
healpix AUX — HEALPixel containing this location at NSIDE=64 in the NESTED scheme ✘ ✔
lastnight AUX — Last calendar date of the exposures used in the coadded spectrum as YYYYMMDD of the beginning of the observing night ✘ ✔
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 ✘ ✔
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:
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