Proposed CalJWST Structure M. Robberto. Cross-Instrument Rationale 2 level processing  CALinsA: from RAMP to calibrated images  CALinsB: associated.

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Presentation transcript:

Proposed CalJWST Structure M. Robberto

Cross-Instrument Rationale 2 level processing  CALinsA: from RAMP to calibrated images  CALinsB: associated images processing CALACSB CALACSA CALSTISB CALSTISA CALWPC2B CALWFPC2A CALNICB CALNICA CALWFC3B CALWFC3A OLD HST structure yr yr yr yr yr. 2008

Heritage WFC3 OPUS pipeline and processing largely based on existing ACS and NICMOS procedures  WFC3 mantra: “just like ACS” Very similar, if not identical, data file formats & contents Calibration task “calwf3” uses applicable ACS/WFC processing for UVIS images and applicable NICMOS processing for IR  Original calwf3 based on direct ports of calacs and calnica C code  Current calwf3 customized to handle WFC3 unique features  Different CCD overscan regions than ACS/WFC  CCD binned modes  IR reference pixels  IR subarrays Multidrizzle will be used to remove geometric distortion and to combine multiple exposures for a given target Courtesy H. Bushouse

Proposed JWST Architecture 3 level processing  CALWebb: From RAMP to Individual Image  CALinsA: Individual image processing and calibration  CALinsB: Associated images processing CALNIRCamB CALNIRCamA CALNIRSpecB CALNIRSpecA CALMIRIB CALMIRIA CALTFIB CALTFIACALFGS CALWEBB yr. 2013

CALimageB CALimageA NIRCAM, MIRI, NIRSPEC, TFI, FGS CALslitB CALslitA NIRSPEC, MIRI CALmsaB CALmsaA NIRSPEC CALifuB CALifuA NIRSPEC, MIRI CALcoroB CALcoroA NIRCAM, MIRI CALWEBB Emphasis on observing modes Object oriented programming enforces commonalities between observing modes rather than instruments New New

Objective: a single CALJWST pipeline CalJWST CALimageB CALimageA NIRCAM, MIRI, NIRSPEC, TFI, FGS CALslitB CALslitA NIRSPEC, MIRI CALmsaB CALmsaA NIRSPEC CALifuB CALifuA NIRSPEC, MIRI CALcoroB CALcoroA NIRCAM, MIRI CALWEBB

MASKCORR Bad Pixel Mask *_RAW.fits Data cube file DQ *_MSK.fits Mask file REFCORR Ref.pixel correction ERR /REF Ref. method flag BDCORR Bias/dark correction ERR *_DRK.fits Dark cube file LINCORR Linearity correction ERR *_LIN.fits Linearity table ITIME SAMP _IMA out? *_IMA.fits Data cube file CRWFCORR Cosmic/Weight/Fit *_NOI.fits Readout noise file ERR *_CRT.fits Count rate file File inProcedureFile outModified Non-SCI Extensions CALWebb common to all modes

WAVECAL Imaging spectroscopy BUILDFLAT FLAT FIELD ARTIFACTS REMOVAL GEOMETRIC CORRECTION ABSOLUTE CALIBRATION Imaging, slit spectra, IFU MSA COADD WEBBdrizzle EXTRACT WEBBphot COADD WEBBspec EXTRACT WEBBspec Final science product CALWEBB Even for different modes, develop a common pipeline handling all instruments, branching to different methods as needed 2-D 3-D

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