[daip] Problem in CALIB

[Eric Greisen]

Poonam Chandra wrote:
> Hi,
> I am analysing a VLA continuum D array data. I am at the stage of 
> running CALIB. I could run CALIB successfully on the flux calibrator. 
> However, it gives error while running the phase calibrator. I check the 
> data. It looks okay to me. Where I am going wrong?

> sasha.> CALIB1: Task CALIB  (release of 31DEC07) begins
> sasha.> CALIB1: CALIB USING 20070301     . X BAND .   1 DISK=  1 USID=2559
> sasha.> CALIB1: UVGET: Using flag table version   1 to edit data
> sasha.> CALIB1: Selecting and editing the data
> sasha.> CALIB1: Doing cal transfer mode with point model for each source
> sasha.> CALIB1: This is not self-calibration
> sasha.> CALIB1: Dividing data by source flux densities
> sasha.> CALIB1: Determining solutions using amp-scalar averaging
> sasha.> CALIB1: Writing SN table    2
> sasha.> CALIB1: RPOL, IF= 1 The average gain over these antennas is  
> 0.000E+00
> sasha.> CALIB1: RPOL, IF= 2 The average gain over these antennas is  
> 0.000E+00
> sasha.> CALIB1: LPOL, IF= 1 The average gain over these antennas is  
> 0.000E+00
> sasha.> CALIB1: LPOL, IF= 2 The average gain over these antennas is  
> 0.000E+00
> sasha.> CALIB1: ERROR: NO VALID SOLUTIONS FOUND

There is no information here from which I can deduce anything.  CALIB 
seems to have found no data.  Try UVPRT with the same adverbs plus 
DOCRT=1 to see if some other task finds data.

Eric Greisen