[evlatests] C and X band tests today

[Brigette Hesman]

After speaking with Rick I realized that my sensitivity discussion  
below is not clear so I have revised it.
C-band
Sensitivity
EVLA antennas are approximately 40-60% more sensitive than VLA antennas
12AC (and 4AC but next into barn so don't worry) has approximately  
70% less sensitivity than other antennas
11(issue mentioned below) can be traced to tcal being off.
X-band
Sensitivity
EVLA and VLA antennas have approximately equivalent sensitivities
11,14,15,25 (issues mentioned below) can be traced to tcal being off.

The other antenna based issues can be

On Oct 24, 2007, at 5:56 PM, Brigette Hesman wrote:

> As Rick mentioned I am reporting on the C and X band tests.
> Generally the system is working well.  I only have a few things to
> mention.
>
> General notes: 1 is in the barn so was out for the entire run, all
> data were loaded with the correlation coefficients
> C-band
> A&C
>       14, 25 out
>       14's data is fine when loaded without the flags
>       24 comes in late
>       4 and 12 had dropouts
> B&D
> 	25 out
>          24 comes in late
> 	15D has "chirps" in the data - states of extremely high correlation
> coefficients
> 	4 and 12 had dropouts
> Sensitivities
> 	EVLA sensitivities ~20% better than VLA
> 	11A has 25% too high correlation coefficients
> 	4AC,12AC has 30% too high correlation coefficients
> Phase jumps
> 	NONE
>
> X-band
> A&C
> 	14 out but data are good when unflagged data loaded
> 	24 takes a while to come online
> 	25 comes online mid-way through observations
> B&D
> 	24 takes a while to come online
> 	25 comes online mid-way through observations
> 	15D has "chirps" in the data - states of extremely high correlation
> coefficients
> Sensitivities
> 	EVLA and VLA sensitivities approximately equivalent
> 	11ABCD has ~15% too high correlation coefficients
> 	14D has ~30% too high correlation coefficients
> 	15CD has ~10% too high correlation coefficients
> 	25ABCD has ~15% too high correlation coefficients
> Phase jumps
> 	NONE
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************************************************

Dr. Brigette Hesman
EVLA
Array Operations Center
NRAO	
Socorro, NM 87801
bhesman at aoc.nrao.edu
Phone: (505) 835 7491

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