[daip] [!4954]: aips - CALIB amplitude errors in phase-only solution

[Eric Greisen]

Eric Greisen updated #4954
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       Staff (Owner): Eric Greisen (was: -- Unassigned --)
                 Due: - Cleared - (was: 02 June 2014 12:50 PM)

CALIB amplitude errors in phase-only solution
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           Ticket ID: 4954
                 URL: https://help.nrao.edu/staff/index.php?/Tickets/Ticket/View/4954
           Full Name: Adam T Deller
               Email: deller at astron.nl
             Creator: User
          Department: AIPS Data Processing
       Staff (Owner): Eric Greisen
                Type: Issue
              Status: Response Overdue
            Priority: Default
                 SLA: NRAO E2E
      Template Group: Default
             Created: 26 May 2014 12:41 PM
             Updated: 26 June 2014 05:00 PM
      Resolution Due: 06 June 2014 12:50 PM 



I'm sorry not to get around to this until now.

I have noticed the following - certain times for LA always have this
issue.  They should be flagged I suspect.

OV has it in spades with WEIGHTIT 0, 1, and 3 but not
WEIGHTIT=2 in either L1R or R modes.

So what should I do - the solvers make sure the data have amplitude=1
on the way in.  I could force amplitude 1 at every iteration in the gains
or i could make as bad anything that comes out more than a little way from
1 - so the general solution is "good" but certain antennas bad.

What do you suggest? 



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