We have a list of our data in dataset form and need to be able to access all
raw files associated with a dataset. If the dataset ends in q or s this is
trivial as the raw file has the same root as the dataset. If the dataset
ends in 0 we can read the _asn.fits file to find the raw exposures.
However, when the dataset ends in a nonzero number, we find that there is
never an association table with the same root. There is, however, always an
assocaition table with that n>0 changed to a zero. An example is the
There is no j8v301011_asn.fits. However there is a j8v301010_asn.fits (and
no dataset j8v301010). Does this mean that all raw files for j8v301011 are
listed in j8v301010_asn.fits? Is this true no matter what the last number
of a dataset is?