ROMAN Calibration Reference Data System (CRDS)

 

NOTICE

The term "operational" has changed to "latest" when referring to the newest CRDS Context available. For more information, please refer to the user guide.

Documentation updates are ongoing. If something in the user guide is ambiguous, please reach out to the CRDS team or file a help desk ticket.


 

Obtain Best Reference Files

  1. Using the Command Line
  2. From Dataset ID or FITS Header Upload
  3. Exploring with Instrument Parameters

Reference File Database Services

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  3. Recent Activity

Latest References (under context roman_0048.pmap)

wfi

roman_wfi_0046.imap      Toggle N/A


absflux ---- Absolute Flux GDPS SSC

abvegaoffset ---- AB-Vega Magnitude Offset

apcorr ---- Aperture Correction

area ---- Area

dark ---- Dark

darkdecaysignal ---- Dark Decay Signal

detectorstatus ---- Detector Status

distortion ---- Distortion

epsf ---- Empirical Point Spread Function

flat ---- Flat Field

gain ---- Gain image

integralnonlinearity ---- Integral Non-Linearity

inverselinearity ---- Inverse Linearity

ipc ---- Interpixel Capacitance

linearity ---- Linearity coefficients

mask ---- Bad Pixel Mask

matable ---- Multiple Accumulation Table

optmodel ---- Optical Model GDPS SSC

pars-assignwcsstep ---- AssignWcsStep runtime parameters

pars-darkcurrentstep ---- DarkCurrentStep runtime parameters

pars-dqinitstep ---- DQInitStep runtime parameters

pars-exposurepipeline ---- Step parameters for ExposurePipeline

pars-flatfieldstep ---- FlatFieldStep runtime parameters

pars-fluxstep ---- FluxStep runtime parameters

pars-highlevelpipeline ---- Step parameters for HighLevelPipeline

pars-jumpstep ---- JumpStep runtime parameters

pars-linearitystep ---- LinearityStep runtime parameters

pars-outlierdetectionstep ---- OutlierDetectionStep runtime parameters

pars-photomstep ---- PhotomStep runtime parameters

pars-rampfitstep ---- RampFitStep runtime parameters

pars-refpixstep ---- RefPixStep runtime parameters

pars-resamplestep ---- ResampleStep runtime parameters

pars-saturationstep ---- SaturationStep runtime parameters

pars-skymatchstep ---- SkyMatchStep runtime parameters

pars-sourcedetectionstep ---- SourceDetectionStep runtime parameters

pars-tweakregstep ---- TweakRegStep runtime parameters

photom ---- Photom

readnoise ---- Read Noise

refpix ---- Reference Pixels

relflux ---- Relative Flux GDPS SSC

saturation ---- Saturation Threshhold

sflat ---- Small scale flat GDPS SSC

skycells ---- Skycells covering entire celestial sphere

specpsf ---- Spectral Point Spread Function GDPS SSC


Context History (more history, all contexts, build contexts)

Start Date Context Status Description
2026-04-28 roman_0048.pmap latest The updated WFI MA table reference file includes the implementation of the Revision H tables, and is applicable to all WFI imaging and spectroscopy modes. Three science tables and four calibration tables have been updated since Revision G and three new tables have been added. This new reference file matches what is included in PRD version PRDOPSRSOC-003.
2026-04-09 roman_0047.pmap archived Delivering initial WFI rmaps for new absflux, optmodel, relflux, sflat, and specpsf SSC reference types to prepare for subsequent reference file deliveries of these types.
2026-02-10 roman_0046.pmap archived Affected modes - WFI, imaging or WIM and spectral or WSM modes, darkdecaysignal, detectorstatus, and integralnonlinearity reference files. This delivery includes three new WFI reference file types for Build 21 - detectorstatus, darkdecaysignal, and integralnonlinearity. The new detector status file is a true false table of which detectors can undergo prompt data processing. The dark decay reference file has a table for every detector of a parameterized correction of a signal decaying in time with amplitude and time scale. The integral non linearity reference files are per detector and have corrections for each amplifier for sets of 128 pixels to account for analog to digital conversion. Delivering the first WFI darkdecaysignal, detectorstatus, and integralnonlinearity rmaps to initialize these new reference types and prepare for subsequent darkdecaysignal, detectorstatus, and integralnonlinearity reference file deliveries.
2026-01-09 roman_0044.pmap archived Delivering a new WFI dark rmap that removes MA_TABLE_NUMBER as a selection criteria because this keyword is not needed for selection of the dark reference files.