Pat,
I apologize for the hole in our documentation. dmarfadd in CIAO1.1 was
developed at the last moment to fix a hole in the grating thread - it
was intended only for grating observations but unfortunately this was
not made clear in the overhastily constructed help file.
I am informed that the forthcoming CIAO2.0 version of the tool can
handle imaging ARFs and does not have the keyword problem you mention.
The documentation is also improved.
The second part of your complaint - that we don't spatially average - I
agree with, and is related to the concern among some CXC scientists that
the spatial averaging is the 'wrong' thing to do. We do have a package
(Alexey Vikhlinin's calcrmf ARF/RMF tools) on the swap page
http://asc.harvard.edu/cgi-gen/contributed_software.cgi which does
support the spatial averaging capability, but there's no arfadd
equivalent there. Can you explain exactly what you were trying to do?
(the motivation originally for dmarfadd was to let you add orders in
grating data; the path to obtaining an ARF averaged over a region for
imaging data is to use the calcarf from the Alexey package, which Alexey
and I have modified to work within CIAO1 smoothly and which includes a
documentation thread.)
In future, I hope you'll also report such problems to helpdesk
so that we can try and address them more directly.
- Jonathan
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