[evlatests] Missing Modcomp-Free data

[Walter Brisken]

It appears there were two subarrays going at this time:

   VlaCorrMode: 0xb2d1d600
     Int Time: 0.416667 seconds = 8 WG cycles
     Mode : [    ] [    ]
     bwCodes = 4444
   Subarrays: 0xb2d1d3d0
     1 : 983pevl.54262.857338263886
     2 : sysstartP.54262.882933368055
   ScanInfo: 0xb2d22b90
     Name = 0542+498
     RA =   5.710038
     Dec =  49.852009
     Receiver: AC = unknown  BD = unknown
     Freq: AC =   325.9375  BD =   320.0000
     Start (LST) = 0.325022
     Start (MJD) = 54262.902164
     Subarray = 983pevl.54262.857338263886
   ScanInfo: 0xb2d22168
     Name = 3C147
     RA =   5.710038
     Dec =  49.852008
     Receiver: AC = unknown  BD = unknown
     Freq: AC =   325.9375  BD =   320.0000
     Start (LST) = 0.305873
     Start (MJD) = 54262.883067
     Subarray = sysstartP.54262.882933368055

This alone is probably not the cause of the missing data, but there were 
some other complications like changing from line to continuum.

The "unknown" band above is a bug (now fixed) in idcaf.  This alone 
wouldn't have prevented data.  I was under the impression that the band 
was called 330MHz.  What is 74MHz called?

-Walter


On Tue, 12 Jun 2007, Rick Perley wrote:

>    My Modcomp-free tests yesterday contained both continuum and line
> observations.   The continuum observations were first, followed by the
> line observations.
>
>    Because the file was late in starting (Ken was doing some 'tweaking
> up'), the first two observations -- continuum for P and L bands -- were
> missed.  To pick these up, I submitted a second file, to follow the first.
>
>    When I filled all the data this morning from the archive, I find
> there is a large gap -- from 21 12 04 through 21 47 30, IAT.  The only
> line observation that I got was the first one (Q-Band).  The data picks
> up again at the beginning of the 2nd file (which I presume restarted the
> system).
>
>
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