[daip] Problem reducing data from AK403

[Amy Mioduszewski]

Hi Melanie,

Sorry we were understaffed for a bit.  What version of AIPS are you using?  I 
don't think the FILLM messages have anything to do with it.  I revamped VLACAL 
recently so I am wondering if I introduced a bug.  If you have a recent version 
of AIPS try running VLACALIB with UVRANGE 0.  This will trigger the use of a 
model for your calibrator.

Amy

Melanie Gendre wrote:
> Hi,
> 
> My name is Melanie and I am trying to get data reduced from the program
> AK403 in X band and I am having some trouble (I've reduced data for 9
> other programs without problems).
> 
> I load the program in AIPS using fillm without problem, except the message:
> localh> FILLM1: Number bad nominal sensitivities: ant 12 IF 1 =         1
> localh> FILLM1: Number bad nominal sensitivities: ant 12 IF 2 =         1
> 
> The summary of observation tells me that the primary calibrator is 1328+307.
> Looking at the antenna location, I chose antenna 4 as reference. Looking
> at the antenna with listr doesn't show any major problem.
> 
> I set the flux of the primary using setjy, it works.
> Then, when I try to calibrate with vlacal, it dies.
> 
> I enter:
>> run vlaprocs
>> task 'vlacalib' ; default
>> getn 1
>> calsour '1328+307'; uvrange 0 400; refant 4
>> calcode '*';snver 1; doprint 0
>> minamp 10; minph 10; freqid 1; vlacal
> 
> and I get the following message:
> localh> CALIB1: CALIB USING AK403_UV     . X BAND .   1 DISK=  1 USID=2403
> localh> CALIB1: Selecting and editing the data
> localh> CALIB1: Doing cal transfer mode with point model for each source
> localh> CALIB1: This is not self-calibration
> localh> CALIB1: Dividing data by source flux densities
> localh> CALIB1: Determining solutions using amp-scalar averaging
> localh> CALIB1: Writing SN table    1
> localh> CALIB1: RPOL, IF= 1 The average gain over these antennas is 
> 0.000E+00
> localh> CALIB1: RPOL, IF= 2 The average gain over these antennas is 
> 0.000E+00
> localh> CALIB1: LPOL, IF= 1 The average gain over these antennas is 
> 0.000E+00
> localh> CALIB1: LPOL, IF= 2 The average gain over these antennas is 
> 0.000E+00
> localh> CALIB1: ERROR: NO VALID SOLUTIONS FOUND
> localh> CALIB1: Purports to die of UNNATURAL causes
> localh> CALIB1: localhost    31DEC07 TST: Cpu=       0.1  Real=       1
> 
> 
> I tried changing 1328+307 by 1331+305 or 3C286, I tried changing the ref
> antenna, but nothing works.
> 
> Any ideas?
> 
> Thank you
> Melanie
>