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4.2 Mirror plus PSPC Response Matrices

   

PSPC plus mirror response matrices are now available as part of the multi-mission legacy/caldb (calibration database) area. The caldb area is accessible via anonymous FTP to textttheasarc.gsfc.nasa.gov under texttt/caldb/data/rosat/pspc/cpf (cpf stands for calibration product file). The matrices are available as FITS format (with texttt.rmf extensions) as:

     pspcb_92mar11.rmf
     pspcc_92mar11.rmf
     pspcb_93jan12.rmf
     pspcc_93jan12.rmf

The ``matrix'' is a convolution of the detector effective area vector, photon redistribution matrix, and PSPC window vector (which includes the window-support wire mesh transmission).   GSFC has software to convolve the boron filter response and vignetting functions with the matrices, as required.  The FITS matrices are compatible with old style SF PHA files, or new FITS PHA files for XSPEC versions 8.2 and later. The difference should not be noticeable once inside XSPEC. The advantage of the FITS formats is that they remove the need to transport the files as ascii (and hence remove the need for rdrsp and mkrsp).   

pspcb(c)_92mar11.rmf corresponds to PROS matrix xspectraldata$dtmat_6.ieee combined with either offar2_5.ieee for PSPC-B, or offar1_5.ieee for PSPC-C.

pspcb(c)_93jan12.rmf corresponds to PROS matrix xspectraldata$dtmat_36.ieee, combined with either offar2_6.ieee for PSPC-B, or offar1_6.ieee for PSPC-C.  

 
• Total Spectral Response Effective Area
• Absolute Flux Calibration