[daip] Question about INDXR and CL tables

[Eric Greisen]

Nicole Gugliucci writes:
 > Hello!  I'm using AIPS to explore a dataset from our test array in Green 
 > Bank.  The data is typically written into Miriad uv file format, but 
 > I've converted it to a fits format that AIPS can read.  It hasn't been a 
 > problem so far, but when I ran FITLD, the task did not create a CL 
 > table.  It has an HI table and AN table.  When I run INDXR, this also 
 > does not create a CL tables, though NX is created.  It is, or at least 
 > thinks it is, a single-source data set.  It had already been TB sorted 
 > with UVSRT.  Am I missing something?  Without first creating CL1, I 
 > can't continue with my calibration.
 > 

CL tables are attached only to multi-source files assumed to contain
both calibrator and target source(s).  If you think you need to do
standard calibration, use the task MULTI to turn the file into a
multi-source file.  Then INDXR will make a CL file.  But if it really
is single source, then standard calibration does not apply anyway and
all you can do is a self-calibration which works without CL tables in
single source files.

Eric Greisen