[evlatests] 3-bit tests from yesterday

Thu Dec 1 12:42:23 EST 2011

Checking these data as the NSF review rolls on ...

One thing is clear -- the PDif Compression problem is not a function of
which set of bits is selected, although there are differences between the
'compressions' for the various antenna-IFs.  As always, the 8-bit path
shows no, or very little (for ea07 only) 'compression'.

> This is the 3-bit test which uses the different sampler gain settings.
> The order is bits 012, 123, and 234, fron LSB bits to MSB bits.
>
> Ken
>
>
> ---------- Forwarded message ----------
> Date: Thu, 01 Dec 2011 03:56:04 +0000
> From: evlaops <evlaops at nrao.edu>
> To: ksowinsk at nrao.edu, mrupen at nrao.edu, emomjian at nrao.edu
> Subject: EVLA Operator Log: 2011-12-01_0025_ku3eqTest
>
> ********************************************************************************
>
> Log Name:          2011-12-01_0025_ku3eqTest     Date:
> 01-Dec-2011
> Project Code:      ku3eqTest                     SBID:            N/A
> Observation Type:  Test                          # Subarrays:     1
> Observing Mode:    Mixed Modes                   Configuration:   D
> Bands Used:        Various                       Decommissioned:  17
> Source File(s):    ku3eq_3C84plus and setBits-64/32/16
> Observer:          Operations
> Observer E-mail:   software/testing
> Operator(s):       Matt Gardiner
>
> API (Atmospheric Phase Interferometer) information can be found at:
> http://science.nrao.edu/facilities/evla/observing/specialtopics/API
> Adobe PDF version of this log is located at:
> http://www.vla.nrao.edu/operators/logs/
> Visibility data is updated each day at IAT/UT midnight and is available
> from
> the
> online archive at: http://archive.nrao.edu
>
>
> ***** WEATHER INFORMATION *****
>
> Time(UTC)       Dew Pt.  Temp.  Wind           Bar. Press.  API RMS
> Phase(degs)
> 01Dec 00:30:34  -15.6    11.8   SW at 2.4 m/s  783.2        2.0
> 01Dec 01:00:11  -16.5    10.5   S at 3.6 m/s   782.9        3.0
> 01Dec 02:21:30  -19.5    7.1    W at 2.7 m/s   783.2        3.3
> 01Dec 03:00:09  -17.4    7.5    SW at 3.9 m/s  783.1        3.1
>
> *** Operator comments for the above weather entries ***
>
> 01Dec 00:30:34     Sky cover 10%.   Mixed clouds.
> 01Dec 01:00:11     Sky cover 10%.   Mixed clouds.
> 01Dec 02:21:30     Sky cover 10%.   Mixed clouds.
> 01Dec 03:00:09     Sky cover 10%.   Mixed clouds.
>
>
> ***** COMMENTS AND OUTAGES *****
>
> Outage information format:
> Start, End, Category, Form#, # of Antennas Affected, Downtime(minutes)
> Antenna ID(s) and Data Effect
> Outage Description
>
>
> Number of Antennas Used: 27
>
> 01Dec 00:25:25
> Starting project ku3eqTest.
>
> 01Dec 00:25:25
> The band(s) used is(are): Various.
>
> N/A
> On source N/A with all available antennas.
>
> 01Dec 00:25:25
> Antenna(s): 19 20
> do not have good baseline positions determined for them because they were
> moved to their present location recently.  Please check for any
> significant
> errors and let the Data Analysts (email - analysts at nrao.edu) know what
> you find. Thank you.
>
> 01Dec 00:25:25
> Your data were taken with the new EVLA computer system controlling the
> Array.
> Observers should carefully review their observations.
> Data of a small fraction of projects, in particular those involving novel
> use
> of
> the Widar correlator, will undergo inspection at the NRAO; if that is the
> case you will receive a separate notification to that effect.
> For the latest information about accessing your data from the archive,
> visit:
> http://science.nrao.edu/facilities/evla/data-archive/evla/index.
> For further questions please use the NRAO helpdesk at:
> http://science.nrao.edu/observing/helpdesk.
>
> 01Dec 00:25:25
> Note: To support our ongoing RFI monitoring efforts, any feedback from
> your
> program on RFI can be sent to: nrao-rfi at nrao.edu.
> The key information to provide is:
>   - Observation/project code
>   - Frequency and Time of the observations
>   - The characteristics of the RFI signal, in particular if it is
> continuous or
>     intermittent?
>   - If possible, a spectrum of the RFI should be included in the e-mail.
> Thanks very much for your support; this information will be continuously
> updated
> on the EVLA science pages at:
> http://science.nrao.edu/evla/observing/RFI/index
>
> 01Dec 00:25:25
> Antennas in the D-array may be shadowed at low elevations.  If shadowing
> occurs, sensitivity will be affected.
>
> 01Dec 00:25:25
> 3-bit tests.  Only antennas 6, 7, 10, 14, 18, 23, 26 are being used.
>
> 01Dec 00:25:25
> Starting setBits-64.evla
>
> 01Dec 00:27:50
> Starting ku3eq_3C84plus.evla
>
> 01Dec 00:31:00
> Antennas are on source.
>
> 01Dec 01:21:30
> Starting setBits-32.evla
>
> 01Dec 01:24:33
> Starting ku3eq_3C84plus.evla
>
> 01Dec 02:18:00
> Starting setBits-16.evla
>
> 01Dec 02:20:23
> Starting ku3eq_3C84plus.evla
>
> 01Dec 03:20:00
> Checking X and L osro.
>
> 01Dec 03:27:00
> Winds are averaging 4.5 m/s and increasing, I'll run pointing later
> tonight.
> (The forecast is for lower winds later tonight.)
>
>
> End Time                 Total Program Time    % Downtime    Total
> Downtime
>                          (minutes x 27 ants.)                  (in
> minutes)
>
> 01-Dec-2011 03:35:52     5142.2                0.0%          0.0
>