[evlatests] RFI Spectral Sweep

[Bryan Butler]

Rick Perley wrote, On 3/17/11 10:06 AM:
>
>      1) The highest seven 'tunings' (from 43 through 50 GHz) have no
> data.  (This from last evening's test run).  'No Data' means just that
> -- not 'integer zeros', but absolutely nothing at all.  On the previous
> test, only the highest three tunings were empty.  And on the first test
> (two days ago), all Q-band tunings had data.  What has changed?

this is probably related to the CBE problems we're chasing right now, 
which cause scans to go missing.


>      2) All lower sideband tunings (all of X-band, and Ka-band from 26
> through 32 GHz) have spectra which are both mis-labeled and
> mis-ordered.  Mis-labeled means that the frequencies in the headers are
> incorrect.  Mis-ordered means that the eight subbands are incorrectly
> placed:  subbands 1 and 8 are interchanged, subbands 2 and 7 are
> interchanged, etc.  The former problem is corrected if we load in an
> alternate SDM (from /home/mctest/evla/mcaf/workspace).  The latter
> problem is not corrected by this -- but Lorant has written a special
> BDFin script which correctly re-orders these subbands upon loading into
> AIPS.   It seems to me that these new issues need to be corrected
> automatically without users having to invoke special scripts.

if this was a hand-generated script then all bets are off.  if you can 
demonstrate that OPT-generated scripts do the same thing then we will 
need to fix it.