[daip] BL149BE: PCOR problems

[Yuri Y. Kovalev]

Dear Lorant,

Thanks for the comment. First of all, I am sorry that I have forgotten 
to send you my plot of the PC table data. I planned to do it.
Here it is:
Coming from AIPS friendly, glued files:
ftp://ftp.mpifr-bonn.mpg.de/outgoing/ykovalev/BL149BE/BL149BE_PC1.ps
Coming from bl149becal.vlba (VLOG):
ftp://ftp.mpifr-bonn.mpg.de/outgoing/ykovalev/BL149BE/BL149BE_PC2.ps

As you can see, I have enough PC data.

I am surprised that you have found PC data for the interval
2006AUG12/224 at 03:20:00 to 2006AUG12/224 at 04:20:59
This experiment was observed just one month ago, in 2008!

>From what I read in the Lenya Kogan's e-mail, I believe, something
works incorrectly when a 2-corr-pass 512 MBps experiment is calibrated 
in PCCOR. I would guess, it is either a problem in the table or in 
PCCOR.

Cheers,
Yuri.

On Wed, 24 Dec 2008, Lorant Sjouwerman wrote:

> On Wed, 24 Dec 2008, Yuri Y. Kovalev wrote:
> 
> 
> #AIPS 1: TIMERANG      0          12        Time range of a calibrator
> #AIPS 1:              55          43         1-4 = start day,hr,min,sec
> #AIPS 1:               0          13         5-8 = end   day,hr,min,sec
> #AIPS 1:               0          23        MUST BE SPECIFIED
> #
> #It does not work reporting:
> #*****
> #PCCOR1: All rows of the PC table are bad for the selected parameters
> #PCCOR1: Purports to die of UNNATURAL causes
> #*****
> 
> Typically you get this message when the timerange specified does not contain 
> any PC calibration information - I haven't looked at your uvdata, only at the 
> calibration file from the auxiliary data (ie bl149becal.vlba.gz) and it 
> appears that the auxilliary data only contains info from UT timerange: 
> 2006AUG12/224 at 03:20:00 to 2006AUG12/224 at 04:20:59. I'm not sure what 
> happened and what other problems this may cause for your data but it may 
> explain the error message you get in all versions when you use the auxiliary 
> data. Looking at the TSM plots I see that PC data should have been included 
> in the correlated data for the full 24 hours, but as typically PC data is 
> taken once a couple of minutes maybe you should check that all antennas have 
> PC data in the small timerange you specify, eg by plotting the PC table for 
> that range. Hope this helps
> 
> 
> Regards,
> 
> Lorant Sjouwerman - Scientific Services - lsjouwerman at nrao.edu
> --------------------------------------------------------------
> c/o NRAO Array Operations Center       Phone:  +1-575-835-7332
>     P.O. Box 0 (1003 Lopezville Rd)    Switch: +1-575-835-7000
>     Socorro NM 87801                   Fax:    +1-575-835-7027