[daip] [!11956]: AIPS - AIPS FITLD

[Eric Greisen]

AIPS FITLD
----------

           Ticket ID: 11956
                 URL: https://help.nrao.edu/staff/index.php?/Tickets/Ticket/View/11956
                Name: Rusen Lu
       Email address: rslu at haystack.mit.edu
             Creator: User
          Department: AIPS Data Reduction
       Staff (Owner): Eric Greisen
                Type: Issue
              Status: Open
            Priority: Default
                 SLA: NRAO E2E
      Template group: Default
             Created: 20 April 2018 03:00 PM
             Updated: 24 April 2018 04:03 PM
           Reply due: 26 April 2018 03:21 PM (1d 23h 18m)
      Resolution due: 14 January 2021 12:00 AM (995d 7h 57m)

On 04/24/2018 09:21 AM, Rusen Lu wrote:
> Rusen Lu updated #11956
> -----------------------
> 
> AIPS FITLD
> ----------
> 
> Ticket ID: 11956
> URL: https://help.nrao.edu/staff/index.php?/Tickets/Ticket/View/11956
> Name: Rusen Lu
> Email address: rslu at haystack.mit.edu 
> Creator: User
> Department: AIPS Data Reduction
> Staff (Owner): Eric Greisen
> Type: Issue
> Status: Open
> Priority: Default
> SLA: NRAO E2E
> Template group: Default
> Created: 20 April 2018 03:00 PM
> Updated: 24 April 2018 03:21 PM
> Resolution due: 14 January 2021 12:00 AM (995d 8h 38m)
> 
> 
> 
> Dear Erick,
> 
> Many thanks for looking into this issue.Yes, as you can also see from 
> the attached table, except AA, the numbers from 2 to 8 are ot always 
> assigned to the same antenna for the 6 files.
> 
> It is not clear to me which one of six files caused the problem, maybe 
> the sixth? In any case, concatenating without the file that caused the 
> problem will make data loss. Here I just used 6 file for testing, and 
> actually we have like 30 files for a track and in toal we have more than 
> a hundered of files. Identifyiing the problematic files will be very 
> time consuming and also it will lead to a singificant data loss. 
> Similarily, loading data individually using ANTNAME and combine them 
> within AIPS will not be a simple task for a couple of tenth of fits 
> files, I guess.
> 
> The thing that I don't quite understand is that the second file assigned 
> the 4th antenna to LM, which is already different than the 4th antenna 
> (JC) in the first file, but why FITLD started to complain several files 
> after this  (when loading the 6th file)?.
> 
> I have no idea about the difference in FITLD between the two versions 
> except the ANTNAME you mentioned when doconcat is true. Are there 
> fundamental differences in handling the assignment of station numbers in 
> the two FITLDs?
> 
> Thanks,
> Rusen
> 
> 
> ------------------------------------------------------------------------
> Staff CP: https://help.nrao.edu/staff

You are right - the messed up AN table was not one of your inputs but 
instead it was the one output by 31DEC18.  My suggestion to use ANTNAME 
exactly as I specified it is worth a try.  It works with NCOUNT > 1 
also.  It just specifies the names to numbers connection.  Give it a try
and I will look some more to see how on file 6 it got to that message in 
MAPANT.  It should not have done so.

Eric




------------------------------------------------------
Staff CP:  https://help.nrao.edu/staff
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://listmgr.nrao.edu/pipermail/daip/attachments/20180424/3f16bc31/attachment.html>