splitcombine

            Read all pn-fits files produced by podf, perform split
            event analysis, and write raw and split-corrected
            pha-file for further analysis with XSPEC

            XMM

           splitcombine,path,phaname=phaname,rawname=rawname,exposure=exposure

           path: path to the directory where the podf generated files reside
           exposure: exposure time of the SciSim simulation (due to a
                 bug the times in the podf-FITS-files are WRONG and cannot
                 be used for the determination of the exposure time)

           phaname: name of the split-corrected pha file
           rawname: name of the pha file containing the "raw" spectrum
           /timemode: the data is Timingmode format
           /chatty: give some information

             files containing NAXIS2=0 get changed to reflect the
             correct number of rows in the FITS file.

               use pnspec to perform the analysis for all files.

        use SciSim to generate a SciSim file, say, ngc4258_70ksec;
        do a
             podf < ngc4258_70ksec
        and then in IDL do
        splitcombine,'/scratch/weekly/wilms/ngc4258/', $
            phaname='ngc70ksec.pha',rawname='ngc70ksec_raw.pha',$
            exposure=70000.

              Version 1.0, Joern Wilms (wilms@astro.uni-tuebingen.de)
                   1999/03/18
              Veriosn 1.1, Ingo Kreykenbohm
                           (kreyken@astro.uni-tuebingen.de)

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