[daip] AIPS issue - BB332

[Craig Walker]

I don't see the problem either.  I think this is one for the AIPS group 
so I have added DAIP to this response.

Cheers,

Craig

PS.  Before we get too many chuckles out of this, Jon's name is 
Jonathan, shortened to Jon, not John.



On 04/07/2014 06:40 AM, Tony Beasley wrote:
> John, Craig – the AIPS issue for BB332 is: the data were correlated in
> two pieces (two files).
>
> When I load the files independently, the TY/GC attachments are correct,
> and I can simply run APCAL to begin amp cal on the separate segments.
>
> When I use FITLD to combine the two pieces (i.e. DOCONCAT 1), the GC
> file appears to be corrupted… when I try
>
> and run APCAL on the combined file, I get
>
> APCAL1: Task APCAL  (release of 31DEC14) begins
>
> APCAL1: Writing SN table   1 for subarray  1
>
> APCAL1: AMPCAL: NO GAIN FOR ANT:   1 POL: 1 IF:    1
>
> APCAL1: Purports to die of UNNATURAL causes
>
> APCAL1: valen 31DEC14 TST: Cpu=      0.0  Real=      0  IO=         9
>
> Attached are PRTABs of the GC file..  SING2 – single file load, COMB2 –
> after FITLD combines files. What I notice is that the combined file has
> duplicate rows for the same antenna…. not sure how that would generate
> the above error.
>
> If I had to guess: I’d say the routines in FITLD that compare/merge the
> GC tables in a DOCONCAT action are having trouble with the GC info being
> produced; APCAL then barfs on the merged table with an obscure error
> message.
>
> thanks.. TB
>

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     R. Craig Walker            Array Operations Center
     cwalker at nrao.edu           National Radio Astronomy Observatory
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