ISOCAM Interactive Analysis User's Manual Version 5.0 - ISO - ESA

84 CHAPTER 12. DATA SLICING
OR
CIA> lw6_scd_dir = ’/home/mdelaney/14300601/scds/lw6’
CIA> sscd_write, lw6_sscd, dir=lw6_scd_dir
To slice the LW3 CONFIGURATION we would reload the SPD SCDs.
CIA> spd_sscd = sscd_read( spd_sscd, dir=scd_dir )
And then use scd find to delete all SCDs not corresponding to the LW3 CONFIG-
URATION and save the remaining LW3 SSCD and SCDs in their own subdirectory.
When you are completely finished slicing you can delete the original unsliced SSCD
from disk.
CIA> sscd_remove, spd_sscd, dir=scd_dir
12.2.3 Slicing a CVF observation (AOT#4)
An example of automatic slicing of a CVF observation is given in this section. This example is
not so thorough as that of Section 12.2.2, since in principle, slicing is similar for data products
of all observation types. Note that this is a relatively simple example – for a more complex CVF
observation comprising of multiple segments see Section 19.5. Here, the slicing process begins
at SPD level with the CISP file.
1. Start a CIA session.
2. Assign the IDL variables path and scds path with the directory holding the data products
and the destination directory for the SCDs (example is given for both UNIX and VMS).
CIA> path = ’DKA200:[MDELANEY.CVF_OBS]’
CIA> scd_dir = ’DKA200:[MDELANEY.CVF_OBS.SCDS]’
OR
CIA> path = ’/home/mdelaney/cvf_obs’
CIA> scd_dir = ’/home/mdelaney/cvf_obs/scds’
3. Both these directory paths and the IDL variable cvf sscd are passed to spdtoscd:
CIA> spdtoscd, ’cisp20305604.fits’, cvf_sscd, dir=path, $
CIA> scd_dat=scd_dir, ack=ack
The SPD SCDs have now been created and the name of their SSCD is held in cvf sscd.
CIA> print, cvf_sscd
CSSC203056040001_96091918462427
4. To get an overview of the SCDs use sscd info: