XMM-Newton Data Files Handbook


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4.1.6.3 RGS Auxiliary File

An RGS file (*R[1,2]*AUX.FIT) is created for each exposure in which at least one CCD node is producing either spectroscopy or high time resolution data. A single file per observation is created, where each row is labelled according to the relevant frame and CCD. Each file consists of two binary tables:

The binary tables consist of the columns listed in Tabs. 14 and 15, respectively.


Table 14: RGS Auxiliary file (*R[1,2]*AUX.FIT) first binary table columns
Name Type$^a$ Units Description
FRAME 1J COUNTER Frame number
FTCOARSE 1I SECOND Coarse frame time$^b$
FTFINE 1I   Fine time frame$^b$
EOSCOARS 1J SECOND Coarse readout interrupt latched time$^b$
EOSFINE 1I   Fine readout interrupt latched time$^b$
FRMTIME 1I   Frame Integration Time
CCDID 1B   CCD identifier
SEQINDEX 1I COUNTER CCD-N index$^b$
NREJECTC 1J PIXEL No. of pixels exceeding rejection threshold (side C)$^b$
NACCEPTC 1J PIXEL No. of pixels below acceptance threshold (side C)$^b$
NUPPERC 1J PIXEL No. of pixels exceeding upper threshold (side C)$^b$
NREJECTD 1J PIXEL No. of pixels exceeding rejection threshold (side D)$^b$
NACCEPTD 1J PIXEL No. of pixels below acceptance threshold (side D)$^b$
NUPPERD 1J PIXEL No. of pixels exceeding upper threshold (side D)$^b$
NDPP 1J PIXEL Total number of pixels received by DPP frontend$^b$
NLOSTEVT 1I COUNTS Lost event counter
ABORTFLG 1I   Abort flag
$^a$See Sect. 9 for convention
$^b$set to 0 (zero) in High Time Resolution Mode


Table 15: RGS Auxiliary file (*R[1,2]*AUX.FIT) second binary table columns
Name Type$^a$ Units Description
SEQINDEX 1I CONTER Sequence index
CCDID 1B   CCD identifier
CCDNODES 1B   CCD Read-out node(s)
CCDOCB 1B   CCD OCB
CCDCSG 1B   CCD CSG
RTHRESHC 1I   CCD selection threshold (side C)
ATHRESHC 1I   CCD acceptance threshold (side C)
UTHRESHC 1I   CCD upper threshold (side C)
RTHRESHD 1I   CCD rejection threshold (side D)
ATHRESHD 1I   CCD acceptance threshold (side D)
UTHRESHD 1I   CCD upper threshold (side D)
WINDOWX0 1I PIXEL CCD X-start
WINDOWY0 I1 PIXEL CCD Y-start
WINDOWDX 1H PIXEL CCD X-length
WINDOWDY 1H PIXEL CCD Y-length
$^a$See Sect. 9 for convention


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Next: 4.1.6.4 RGS Diagnostic Mode Image File Up: 4.1.6 RGS science files Previous: 4.1.6.2 RGS High Time Resolution Mode Event List File
European Space Agency - XMM-Newton Science Operations Centre