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
tfile AUX File that best fit template comes from in idlspec2d product
theta AUX Template coefficients of best fit
thing_id AUX Resolve THING_ID in SDSS imaging for best positional match
thing_id_targeting AUX Resolve THING_ID in SDSS imaging for targeted object
tile AUX Tile number (each tile can have several plates drilled for it)
vdisp AUX km s-1 Velocity dispersion
vdispchi2 AUX Chi-squared for best-fit velocity dispersion
vdispdof AUX Number of degrees of freedom in velocity dispersion fit
vdisp_err AUX km s-1 Error in velocity dispersion
vdispnpix AUX Number of pixels overlapping the templates used in the velocity dispersion fit
vdispz AUX Redshift associated with best-fit velocity dispersion
vdispz_err AUX Error in redshift associated with best-fit velocity dispersion
wcoverage AUX Coverage in wavelength, in units of log10 wavelength
xfocal AUX mm Hole position on plate (+X = +RA)
yfocal AUX mm Hole position on plate (+Y = +DEC)
z_conf_person AUX Visual-inspection confidence (0=not inspected or no confidence, 1,2=low confidence, 3,4=high confidence)
z_err_noqso AUX Error in Z_NOQSO redshift
z_noqso AUX Best redshift when ignoring QSO fits, recommended for BOSS CMASS and LOWZ targets; calculated only for survey=boss spectra, not for any SDSS spectrograph data
zoffset AUX micron Washer thickness used for backstopping BOSS quasar targets, so they are closer to 4000 Angstrom focal plan
z_person AUX Visual-inspection redshift
zwarning_noqso AUX Warnings in z_noqso redshift (BOSS spectra only)

Data Set: SDSS-DR16, SPECTRA fields

Name Storage Units Description Default All
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
flux SPECTRA 1e-17 erg cm-2 s-1 AA-1 Coadded calibrated flux
wave_sigma SPECTRA pixel Line-spread function width (sigma of approximating Gaussian) in units of number of pixel
ivar SPECTRA 1e+34 cm4 s2 AA2 erg-2 Inverse variance of flux
wavelength SPECTRA AA Wavelength in units of Angstroms
mask SPECTRA and_mask

Data Set: BOSS-DR16, AUX fields

Name Storage Units Description Default All
z_err_noqso AUX Error in Z_NOQSO redshift
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
nturnoff AUX Number of stars used for SNTURNOFF determination
elodie_z_modelerr AUX Standard deviation in Elodie redshift among the 12 best-fit stars
fracnsighi AUX Fraction of pixels high by more than N sigma relative to best-fit (for 1,2,..,10 sigma)
survey AUX Survey name
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
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

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
survey AUX Survey name
main_nspec AUX Number of coadded spectra for this TARGETID in Main survey
bgs_target AUX BGS (Bright Galaxy Survey) target selection bitmask
program AUX DESI program type - BRIGHT, DARK, BACKUP, OTHER
zcat_nspec AUX Number of coadded spectra for this TARGETID in this zcatalog
desi_target AUX DESI (dark time program) target selection bitmask
sv3_scnd_target AUX Secondary target selection bitmask for SV3
tsnr2_gpbbackup AUX GPBBACKUP template (S/N)^2 summed over BRZ
sv_nspec AUX Number of coadded spectra for this TARGETID in SV (SV1+2+3)
coadd_fiberstatus AUX Bitwise AND of the FIBERSTATUS values of the spectra used in the coadd
pmdec AUX mas year-1 Reference catalog proper motion in the Dec direction
std_fiber_ra AUX arcsec Standard deviation (over exposures) of RA of actual fiber position
sv2_mws_target AUX MWS (bright time program) target selection bitmask for SV2
tsnr2_gpbbright AUX GPBBRIGHT template (S/N)^2 summed over B,R,Z
sv1_mws_target AUX MWS (bright time program) target selection bitmask for SV1
objtype AUX Object type: TGT, SKY, NON, BAD
plate_ra AUX deg Right Ascension to be used by PlateMaker
coadd_numexp AUX Number of exposures included in the coadd for this target
sv3_desi_target AUX DESI (dark time program) target selection bitmask for SV3
rms_delta_y AUX mm RMS (over exposures) of the fiber difference between measured and requested CS5 Y location on focal plane
ref_epoch AUX year Reference epoch for Gaia/Tycho astrometry. Typically 2015.5 for Gaia
rms_delta_x AUX mm RMS (over exposures) of the fiber difference between measured and requested CS5 X location on focal plane
sv3_mws_target AUX MWS (bright time program) target selection bitmask for SV3
sv2_bgs_target AUX BGS (bright time program) target selection bitmask for SV2
sv2_scnd_target AUX Secondary target selection bitmask for SV2

Data Set: DESI-DR1, SPECTRA fields

Name Storage Units Description Default All
model SPECTRA 1e-17 erg cm-2 s-1 AA-1 Pipeline best model fit
mask SPECTRA Mask value
ivar SPECTRA 1e+34 cm4 s2 AA2 erg-2 Inverse variance of flux
wave_sigma SPECTRA AA Line-spread function width (sigma of approximating Gaussian) in units of Angstroms
wavelength SPECTRA AA Wavelength in units of Angstroms
flux SPECTRA 1e-17 erg cm-2 s-1 AA-1 Coadded calibrated flux

Data Set: DESI-EDR, AUX fields

Name Storage Units Description Default All
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-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
zwarning_noqso AUX Warnings in z_noqso redshift (BOSS spectra only)
z_person AUX Visual-inspection redshift
zoffset AUX micron Washer thickness used for backstopping BOSS quasar targets, so they are closer to 4000 Angstrom focal plan
z_noqso AUX Best redshift when ignoring QSO fits, recommended for BOSS CMASS and LOWZ targets; calculated only for survey=boss spectra, not for any SDSS spectrograph data
z_err_noqso AUX Error in Z_NOQSO redshift
z_conf_person AUX Visual-inspection confidence (0=not inspected or no confidence, 1,2=low confidence, 3,4=high confidence)
yfocal AUX mm Hole position on plate (+Y = +DEC)
xfocal AUX mm Hole position on plate (+X = +RA)
wcoverage AUX Coverage in wavelength, in units of log10 wavelength
vdispz_err AUX Error in redshift associated with best-fit velocity dispersion
vdispz AUX Redshift associated with best-fit velocity dispersion
vdispnpix AUX Number of pixels overlapping the templates used in the velocity dispersion fit
vdisp_err AUX km s-1 Error in velocity dispersion
vdispdof AUX Number of degrees of freedom in velocity dispersion fit
vdispchi2 AUX Chi-squared for best-fit velocity dispersion
vdisp AUX km s-1 Velocity dispersion
tile AUX Tile number (each tile can have several plates drilled for it)
thing_id_targeting AUX Resolve THING_ID in SDSS imaging for targeted object
thing_id AUX Resolve THING_ID in SDSS imaging for best positional match
theta AUX Template coefficients of best fit
tfile AUX File that best fit template comes from in idlspec2d product
tcolumn AUX Columns of template files that correspond to each template
targettype AUX General type of target (SCIENCE, STANDARD, or SKY)
targetobjid AUX Unique database ID of targeting object based on RUN, RERUN, CAMCOl, FIELD, ID (same as SkyServer version)
survey AUX Survey name

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)