Consider a CRDD file which contains four close point sources.
TRACECRDD can be used to assign the quality ``SOURCE_1'' to
the samples contained within the first source (from any
detector), and equivalent qualities could be set up for the other three
sources. When running DESTCRDD, it would then be possible to
exclude the data from these four sources by giving the parameter
QEXP the following value:
IRAS90 --- IRAS Survey and PO Data Analysis Package --- Reference Guide Starlink User Note 163 David S. Berry, W Gong, D C Parsons 19 February 1995 E-mail:ussc@star.rl.ac.uk