[daip] Extension table missing {External}

[Eric Greisen]

There should be a message ahead of the TABINI message shown below.  That is probably the most important one in the trail of messages.  Error 1 from TABINI means bad inputs but there are several ways that can happen.  A helpful diagnostic would be the output of PRTTP with PRTLEV=2 printed to a text file and then
attached to your next email.  It would probably be good to examine your data area to make sure there are no AN orphan files (one not properly attached to a UV and CB file).

Eric greisen
________________________________
From: mz <mgnahz at gmail.com>
Sent: Wednesday, April 22, 2026 12:29 AM
To: Eric Greisen <egreisen at nrao.edu>
Subject: Extension table missing {External}

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Dear Eric,

I've got the correlated FITS file from our correlator and when I load it into AIPS I got the ERROR messages like:
CUSP  > FITLD5: TABINI: ERROR ON TYPE AN DISK  1 CNO      2 VERSION     1
CUSP  > FITLD5: ANINI: ERROR   1 FROM TABINI OPCODE = WRIT
CUSP  > FITLD5: ANINI: ERROR   1 INITIALIZING ANTENNA TABLE FOR WRIT
CUSP  > FITLD5: AG2AN: ERROR   1 OPENING AN TABLE #    1
CUSP  > FITLD5: BT2AIP: ERROR   1 FORMING ANTENNA TABLE
CUSP  > FITLD5: ERROR      1 RETURNED FROM BT2AIP
CUSP  > FITLD5: Purports to die of UNNATURAL causes

I checked the loaded uv data that the AN and SU tables are missing. Is that a garbled file from the correlator, or is there any way to reconstruct those tables in AIPS? Thank you very much for your suggestion.

Best regards,
Ming Zhang


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