[evlatests] New WIDAR data

[Steven T. Myers]

On Fri, 25 Sep 2009, Rick Perley wrote:

>    I could find no zero records (yeah!!!), and few, if any
> 'drop-downs'.  Other than the known initial records at the beginning of
> each scan being weak due to antenna motion, the data look very clean
> throughout.

I see the following drop-downs on 1331+305 (there may be others on other
sources):

     # Field=1 Time=2009/09/24/22:37:23.5 BL=5-10 Spw=0 RR
     # Field=1 Time=2009/09/24/22:47:17.5 BL=3-6 Spw=1 RR
     # Field=1 Time=2009/09/24/22:56:39.5 BL=2-9 Spw=0 RR
     # Field=1 Time=2009/09/24/22:37:04.5 BL=4-8 Spw=2 LL
     # Field=1 Time=2009/09/24/23:07:09.5 BL=3-8 Spw=0 LL
     # Field=1 Time=2009/09/24/23:37:23.5 BL=6-11 Spw=3 LL
     # Field=1 Time=2009/09/24/23:38:57.5 BL=5-8 Spw=0 LL

Casa spectral windows are numbered starting at 0 (0,1,2,3) and are
not the "names" of the IFs or sub-bands.

Note that these BL use the casa antenna numbers:
#	  ID   Name  Station   Diam.    Long.         Lat.
#	  0    ea01  W09       25.0 m   -107.37.25.2  +33.53.51.0
#	  1    ea02  E02       25.0 m   -107.37.04.4  +33.54.01.1
#	  2    ea03  E09       25.0 m   -107.36.45.1  +33.53.53.6
#	  3    ea04  W01       25.0 m   -107.37.05.9  +33.54.00.5
#	  4    ea08  N12       25.0 m   -107.37.09.0  +33.54.30.0
#	  5    ea09  E06       25.0 m   -107.36.55.6  +33.53.57.7
#	  6    ea18  N16       25.0 m   -107.37.10.9  +33.54.48.0
#	  7    ea19  W04       25.0 m   -107.37.10.8  +33.53.59.1
#	  8    ea23  E07       25.0 m   -107.36.52.4  +33.53.56.5
#	  9    ea24  N10       25.0 m   -107.37.08.2  +33.54.22.4
#	  10   ea25  N02       25.0 m   -107.37.06.2  +33.54.03.5
#	  11   ea28  N08       25.0 m   -107.37.07.5  +33.54.15.8

I also see the following "bad" channels (with high noise or
amps after calibration):

     # BL=6-7 Spw=2 Chan=15 Freq=4.87975 RR,LL
     # BL=0-7 Spw=2 Chan=16 Freq=4.88025 LL
     # AN=8 Spw=1 Chan=240 Freq=4.86425 RR,LL

Note casa channels are numbered starting from zero.

I have not looked at the other sources in that dataset for
dropouts etc.

I got very few zero amp dropouts (none on this source) which
may overlap other edits.

The rate of full drop-outs/zeros has declined considerably since
the Aug27 WSC run, and the number of partials has also dropped
(not sure if its as much).