[daip] Re: AIPS

[Eric Greisen]

Preeti Kharb writes:
 > Hi Eric,
 > 
 > I was wondering if you could advise me on this peculiar problem I am
 > facing while running AIPS (31DEC04) on my laptop which has Fedora Core 4
 > installed on it.
 > 
 > I did a binary installation and finally AIPS was working. Today however
 > for some reason, while running AIPS, I found that "ucat" and "mcat" was
 > suddenly not showing any entries (there were many CALIB files etc.
 > before).
 > 
 > I re-started AIPS, tried RESTORE 0, deleted the SGDuuu001.uuu\; file.
 > (I also made some changes to DADEVS.LIST - basically reordered the disk
 > areas - but this was for another reason.)
 > 
 > However, whenever I try to re-load the UVDATA file using FITLD, I get the
 > following error.
 > 
 > localh> FITLD1: Task FITLD  (release of 31DEC04) begins
 > localh> FITLD1: Found MULTI    observed on 05-NOV-2002
 > localh> FITLD1: UV data will be written in compressed format
 > localh> FITLD1: ZCREAT: FILE DA01:CBD001001.00M; ALREADY EXISTS
 > localh> FITLD1: CATDIR: WARNING - AN OLD HEADER FILE WAS PRESENT
 > localh> FITLD1: ZCREAT: FILE DA01:UVD001001.00M; ALREADY EXISTS
 > localh> FITLD1: ZCREAT ERROR     1 FOR AO170.021105.CH0   .   1
 > localh> FITLD1: CATDIR: INCOMPLETE ID ON CLOSE OF CATNO     1
 > localh> FITLD1: ERROR      5 RETURNED FROM UVFHDR
 > localh> FITLD1: Purports to die of UNNATURAL causes
 > localh> FITLD1: localhost    31DEC04 TST: Cpu=       0.1  Real=       0
 > 
 > So, DA01 has all the data-files which I had FITLDed earlier, but they are
 > not visible on doing "ucat".
 > 
 > Can you please advise ?

Exit aips - I predict that your CA file on this disk has been lost.
When you start up again a new empty one is made and that is the one
looked at by ucat/mcat.  When you exit, the new CA file should be
deleted if it is empty.

cd your data area

ls -l CAD*
ls -l CBD*

the latter are the header files.  If there is no CA and lots of CB we
have a solution

cd $AIPS_ROOT
source LOGIN.CSH   (or . LOGIN.SH in bash)
$CDTST
RUN RECAT

and answer the questions

Eric Greisen