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.