[daip] New Client Reply - [!HRG-988608]: AIPS - SPLIT troubles - SPLCOP FOUND NO SAMPLES error message

[Robert Jeffrey]

New Client Reply: AIPS - SPLIT troubles - SPLCOP FOUND NO SAMPLES error message

Thank you, Eric and Amy, you have been most helpful. The different phase pointings in this dataset are different correlator passes on the same set of observations, rather than being different physical pointings of the telescopes. The times of the scans on all pointings {E4,E3,…,C0,…,W3,W4} are the same, so I can fix the problem by using TABED to alter the Source ID.

However, for some of the epochs (BB301F, BB301G, BB301H and BB301I), phase pointings SS433_E4 and SS433_E3 have the same Source ID. For example, here are the appropriate lines from the output of LISTR for BB301I:

  ID Source           Qual  Calcode RA(2000.0)     Dec(2000.0)  No. vis  | Cat. No.
   1 J1929+0507      : 0000   V     19:29:19.9481  05:07:57.591  181166  |     1
   3 SS433_E4        : 0000         19:11:49.5133  04:58:57.873  705167  |     1
  12 J2021+0515      : 0000   V     20:21:35.2812  05:15:04.778    2647  |     1

  ID Source           Qual  Calcode RA(2000.0)     Dec(2000.0)  No. vis  | Cat. No.
   3 SS433_E3        : 0000         19:11:49.5266  04:58:57.873  567856  |     2
   4 SS433_E2        : 0000         19:11:49.5399  04:58:57.873  567856  |     3
   5 SS433_E1        : 0000         19:11:49.5533  04:58:57.873  567856  |     4
   6 SS433_C0        : 0000         19:11:49.5666  04:58:57.873  567856  |     5
   7 SS433_W1        : 0000         19:11:49.5799  04:58:57.873  567856  |     6
   8 SS433_W2        : 0000         19:11:49.5933  04:58:57.873  567856  |     7
   9 SS433_W3        : 0000         19:11:49.6066  04:58:57.873  567856  |     8
  10 SS433_W4        : 0000         19:11:49.6199  04:58:57.873  567856  |     9

This is rather bizarre and perplexing, and only affects some of the epochs (which were otherwise loaded through an identical pipeline). Is it something that you have seen before?

Thanks again for your help,
Rob

Ticket Details
===================
Ticket ID: HRG-988608
Department: AIPS Data Processing
Priority: Default
Status: Open
Link:  https://help.nrao.edu/staff/index.php?_m=tickets&_a=viewticket&ticketid=3058