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Calibration Access and Data Handbook

RGS CCF Components

While some relevant RGS calibration data are given in the general-purpose CCF components

• XMM_ABSCOEFF
• XMM_BORESIGHT
• XMM_MISCDATA
• XMM_SPECQUAL
• XRT[12]_XPSF

most are stored in files named RGS[12]_dddddd_vvvv.CCF, where dddddd shows the type of data and vvvv is the 4-digit version number. There is one CCF file each of identical structure for RGS1 and RGS2 as shown by the filename and the corresponding INSTRUMENT header keyword. Some information concerning the maintenance of RGS CCF files is given below, though more details are available in the release notes that accompany new file releases and other technical notes. Maintenance work is often done with a combination of SAS and IDL tools, many of which were written by Cor de Vries at SRON Utrecht. Efforts are underway to centralise these procedures at ESAC. The purpose of CCF files is for use during data reduction by the SAS in the production of RGS event lists from which the spectra of sources are extracted, accompanied by response files. The RGS SAS tasks that use individual CCFs are shown in the table below.

Use of CCF components by RGS SAS tasks
XMM_ABSCOEFF									Y		Y
XMM_BORESIGHT		Y
XMM_MISCDATA		Y								Y
XRT[12]_XPSF											Y
RGS[12]_ADUCONV				Y	Y	Y					Y
RGS[12]_BADPIX			Y		Y
RGS[12]_CLOCKPATTERNS
RGS[12]_COOLPIX
RGS[12]_CROSSPSF									Y		Y
RGS[12]_CTI				Y
RGS[12]_DARKFRAME				Y	Y	Y
RGS[12]_EFFAREACORR											Y
RGS[12]_EXAFS											Y
RGS[12]_HKPARMINT	Y
RGS[12]_LINCOORD		Y		Y		Y	Y	Y	Y	Y	Y
RGS[12]_LINESPREADFUNC											Y
RGS[12]_MODEPARAM			Y
RGS[12]_QUANTUMEF											Y
RGS[12]_REDIST									Y		Y
RGS[12]_TEMPLATEBCKGND