[daip] Trouble reading in lowband data set with OBIT, in AIPS.

[bcotton at nrao.edu]

Susan,

   I think you're misremembering, the P band data has 1024 channels:

ASDMList: info    20121009T054629 ASDMList Begins, svn ver. 428M
ASDMList: info    20121009T054629 Date/Time: 2012-10-09  05:46:29
Summary of ASDM in /lustre/fowen/TSUB0001.sb11188347.eb11264203.56135.03471128472
  Configuration Summary
Observed 2012-07-27, Array = EVLA, Observer = Frazer Owen
Configurations
 
  Configuration  0, no. SpWin = 1
     SpWin=  0 Freq=   0.054 GHz, 16128 chan of BW=    1.984 kHz, tot BW=  32.000 MHz, USB Band=EVLA_4
  Configuration  1, no. SpWin = 4
     SpWin=  1 Freq=   0.024 GHz, 512 chan of BW=  125.000 kHz, tot BW=  64.000 MHz, USB Band=EVLA_4
     SpWin=  2 Freq=   0.152 GHz, 1024 chan of BW=  125.000 kHz, tot BW= 128.000 MHz, USB Band=EVLA_4
     SpWin=  3 Freq=   0.280 GHz, 1024 chan of BW=  125.000 kHz, tot BW= 128.000 MHz, USB Band=EVLA_4
     SpWin=  4 Freq=   0.408 GHz, 1024 chan of BW=  125.000 kHz, tot BW= 128.000 MHz, USB Band=EVLA_4
 
   To get the first spectral window of configuration 1, specify 512
channels and for 2-4, 1024 channels.  All of the low band data I've
seen looks like this.  This data read fine when I tried it.

   ASDMList (BDFLIST in AIPSIsh) is useful for cracking the ASDM.

-Bill

Susan Neff writes:
 > Hi all,
 > 
 > I'm having some trouble reading in low-band data sets.
 > 
 > As a test I tried reading in a dataset I read in a 
 > month ago,
 > which worked fine then but doesn't now.
 > 
 > I'm trying to use OBIT through AIPS, with BDFLIST and 
 > BDF2AIPS.
 > 
 > The data set I started trying to read in is:
 >    
 > /lustre/fowen/TSUB0001.sb11188347.eb11264203.56135.03471128472
 > 
 > The data set that I read in a month ago and now can't 
 > read, at least not completely, is:
 >    
 > /lustre/fowen/TSUB0001_sb11323316_1_001.56148.12726436343
 > 
 > I had the same problem with both.
 > 
 > 
 > Both datasets have one configuration (0) which is 
 > 4-band only,
 > 12168 channels,
 > and another configuration(1) which is 4 and P band 
 > together,
 > with 1 spectral window of 512 channels starting at 24MHz,
 > and 3 spectral windows of 512 channels each, starting at
 > 152, 280, and 408 MHz.
 > 
 > 
 > It seems to get configuration 0 fine, and the first 
 > spectral
 > window of configuration 1 fine, but not the second-fourth
 > spectral windows of configuration 1.  When I ran it before
 > with these inputs, it wrote 3 separate files into AIPS 
 > without
 > me having to do anything special.
 > 
 > 
 > I can't tell from what it's telling me if this is a 
 > BDF error or
 > an AIPS error or some combination.
 > 
 > 
 > Can you help?
 > 
 > Thanks,
 > -s-