[daip] spectral windows

[Eric Greisen]

On 01/28/2017 09:58 AM, Farhad Zadeh wrote:
> Hi Eric,
> Sorry for a simple question. I have a casa reduced data  set that is loaded
> into aips. However, the spectral windows are moved around. I have 8GHz band
> with 4x16 IFs at Q band.  So, the frequency of each 16 IFs are not in
> order of increasing frequencies.
> Also, when I selfcalibrate in phase and make a DFTPL, the frequency in
> the plot shows 34 GHz!
> This is a Q band. In any case, it may be that the frequency axis is
> confused. Listr shows that the frequencies are
> all correct but not in order. I forget the aips  command reoders the
> spectral windows.  I appreciate it.

I looked at DFTPL and it does not ever show a bandwidth.  It lists the 
channel range, the IF range, and the frequency of the center channel of 
BIF.  The formula to determine that is correct, perhaps the FQ table 
from CASA has problems.  It would interest me to see it - can you run 
PRTAB on INEXT='FQ' and send me the output?

Eric