[daip] [!16633]: AIPS - Missing cross-hand visibilities in the BH221A & C HSA data

[Jongho Park]

Jongho Park updated #16633
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Missing cross-hand visibilities in the BH221A & C HSA data
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           Ticket ID: 16633
                 URL: https://help.nrao.edu/staff/index.php?/Tickets/Ticket/View/16633
                Name: Jongho Park
       Email address: jpark at asiaa.sinica.edu.tw
             Creator: User
          Department: AIPS Data Reduction
       Staff (Owner): -- Unassigned --
                Type: Issue
              Status: Open
            Priority: Default
                 SLA: NRAO E2E
      Template group: Default
             Created: 28 July 2020 12:20 PM
             Updated: 28 July 2020 12:20 PM
           Reply due: 30 July 2020 12:20 PM (2d 0h 0m)
      Resolution due: 24 April 2023 12:00 AM (999d 11h 40m)

Dear colleagues,

I found that there are only parallel-hand data in some of the HSA (VLBA+EB+Y27) data observed on 2017 May 15(BH221A) and 20 (BH221C). I downloaded these data from the VLBA archive. The file "VLBA_BH221A_bh221a_BIN0_SRC0_0_170609T135351.idifits -- correl:17-Jun-09 13:53:52 job:3" in the archive does not have Stokes RL and LR data. It only had Stokes RR and LL. Another file "VLBA_BH221A_bh221a_BIN0_SRC0_0_170614T170912.idifits    --    correl:17-Jun-14 17:09:13  job:3" has all four correlations but it does not have the data between UT 1/00:22:00 and 1/04:22:41. This time range exists in the previous data (but no RL and LR) so it should not be observations halted for this time range.

Also, the K band data "VLBA_BH221A_bh221a_BIN0_SRC0_0_170614T170912.idifits    --    correl:17-Jun-14 17:09:13  job:3" does not have Stokes RL and LR data at all.

Could you help me to get these missing data recovered? Thank you very much for your support.

Best regards,

Jongho Park


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