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.