[daip] VLBARUN failure at PCCOR task

[Venkatessh Ramakrishnan]

Thanks a lot, Eric. That did the trick. However, it worked only when I 
set DOPLOTS=1. If I tried to create numerous plots with the option 2 it 
falters at the task SNPLT that comes after the second run of CLCAL as it 
searches for table 11 when only 4 exists.


Best,
-Venkatessh.

On 2020-05-06 19:07, Eric Greisen wrote:
> On 5/6/2020 4:18 PM, Venkatessh Ramakrishnan via Daip wrote:
>> 
>> Hello,
>> 
>> I encountered an error while running the PCCOR task as part of the 
>> VLBARUN pipeline. The error reads as follows:
>> 
>> All rows of the PC table are bad for the selected parameters.
>> Purport to die of UNNATURAL causes.
>> 
>> I am performing the reduction of my VLBA experiment BR229A using the 
>> AIPS19 version on my Linux machine. I tried plotting the PC table and 
>> found dips during the observation of the bandpass calibrator. If I 
>> understand correctly, these dips are caused when the location of the 
>> bandpass calibrator is farther away from the target, as a result, 
>> twisting the cables. But could that or anything else affect correcting 
>> the instrumental phases?
> 
> 
> This tells you that the PC table does not have valid entries in the
> strong source time range.  Set INVER=-1 to do "manual phase cal"
> instead.  That should work and is often much better than PCCOR.
> 
> Eric Greisen