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cxcsds / ciao-contrib

Extra scripts and code to enhance the capabilities of CIAO.
GNU General Public License v3.0
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Should we remove the per-chip exposure-related keywords in merged products? #177

Open DougBurke opened 5 years ago

DougBurke commented 5 years ago

Once we merge datasets then - apart from for hard-to-algorithmically-quantify-but-obvious-to-the-user conditions - the per-chip exposure-related keywords are "meaningless". In fact, the concept of exposure time could also be considered meaningless but I don't want to go that far.

So, we could remove the ONTIMEn, LIVTIMEn, EXPOSURn keywords (any more?) when merging ACIS data. It would also probably require removing any time subspaces in these files too (e.g. GTI blocks).

The question is should we?

DougBurke commented 5 years ago

Note that this was the cause of part of the problem in #262