[daip] fixing channel widths
Eric Greisen
egreisen at nrao.edu
Fri Sep 21 19:12:05 EDT 2007
Jacqueline Hodge writes:
> Hi Eric,
>
> I'm the user who was asking Meri why FILLM was sending my two IFs to
> different files. She sent me your response regarding fixing the channel
> widths, but I have a question about fixing the tables. I can see
> that the channel widths in the FQ tables need to be changed, but the info
> in the SU tables looks the same (at least to my untrained eye) as that for
> similar, *uncorrupted* files. In particular, the bandwidths in Column
> 10 are the same as those in other files. What needs to be fixed in the SU
> tables then?
>
Column 10 of the SU table has a BANDWIDTH which apparently is used by
some tasks. That should be forced to a correct value for channel
separation not total bandwidth. It may be that the temporary error in
the data from the VLA does not affect this - I have not actually seen
a bad data set in detail to know. I was told that someone had trouble
with the error until they found this overlooked source of
information.
Eric Greisen
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