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*t2d* - FITS tape to disk for files with binary tables

To read data from a ROSAT tape use the task t2d. Make sure you are in a directory with 10 Mbytes of space. If your data are in RDF format there will be 16 PSPC FITS files (8 HRI). If your data are in US Rev0 format, or is from the Rev0 archive there will be more FITS files.

Tape handling is site-dependent. Users at SAO should refer to the SAO-HEAD IRAF Users Site Guide for details concerning tape access. Assuming the user is set up so that a tape drive is available and accessible:

  
  To mount DAT tapes at SAO:

  cfa#: rsh reel                                   # remote logon to reel
  cfa250: getdev mtn                             # assign tape drive mtq.
                        # The other choices are posted on the input drives.
  cfa250: cd iraf                   # Enter directory with login.cl file.

  cfa#: cl 
  cl> allocate mtn                 # IRAF allocation (this specific to SAO)
  device mtn is already allocated              # ignore this message, it is
                                                         # allocated to you
  
  
  cl> dataio
  da> t2d
  Input file descriptor: mtn
  List of files:                             # carriage return (for all files)
  Output file root name:  rostape

To conserve on disk space you can load only selected files from the tape.

US Rev0 FITS files used by PROS analysis are ``2-12,14,25" for PSPC (HRI ``2-6,8"). See the ROSAT Data Products Guide for file descriptions.

RDF FITS files are packaged in a smaller number of FITS files with multiple extensions in each file, see explain_xdata for a description; the tape list follows:

Detailed List of RDF FITS Files:

            PSPC RDF tape list                

    tape001 -> list of files on tape
    tape002 -> rp110590n00_bas.fits      Photon event and good times
    tape003 -> rp110590n00_im1.fits      Broad band image
    tape004 -> rp110590n00_im2.fits      Hard (0.5-2 keV) band image
    tape005 -> rp110590n00_im3.fits      Soft (0.1-0.4 keV) band image
    tape006 -> rp110590n00_bk1.fits      Broad background image
    tape007 -> rp110590n00_bk2.fits      Hard background image
    tape008 -> rp110590n00_bk3.fits      Soft background image
    tape009 -> rp110590n00_mex.fits      Exposure map
    tape010 -> rp110590n00_ime.fits      Energy-coded image
    tape011 -> rp110590n00_src.fits      Source analysis results
    tape012 -> rp110590n00_anc.fits      Orbit, aspect and housekeeping data
    tape013 -> rp110590n00_his.fits      Processing history
    tape014 -> rp110590n00_prt.fits      Postscript information
    tape015 -> rp110590n00_raw.fits      Uncorrected events list
    tape016 -> rp110590n00_ltc.fits      Source light curves

            HRI RDF tape list

    tape001 -> list of files on tape
    tape002 -> rh110267n00_bas.fits      Photon event and good times
    tape003 -> rh110267n00_im1.fits      Image
    tape004 -> rh110267n00_bk1.fits      Background image
    tape005 -> rh110267n00_src.fits      Source analysis results
    tape006 -> rh110267n00_anc.fits      Orbit, aspect and housekeeping data
    tape007 -> rh110267n00_his.fits      Processing history
    tape008 -> rh110267n00_prt.fits      Postscript information

The differences between RDF, US Rev0, MPE Rev0 data are described in help file_compare. A detailed list of FITS files in all three formats is gven in Section 12.