VLA archive file 22B-193.sb43011222.eb45337374.60402.42656119213

[xinglunju]

SB 43011222
JACKS region 20

• Observations completed
• VLA CASA Calibration pipeline run by observatory
• Weblog downloaded and unpacked
• Raw data downloaded (specify where)
  • local machine
  • Globus
• Pipeline calibration assessment
• Calibrated MS generated
  • Uploaded to Globus
• Imaging: Continuum
• Imaging: Lines
  • NH3 (1,1)
  • NH3 (2,2)
  • NH3 (3,3)
  • NH3 (4,4)
  • NH3 (5,5)
  • H2O
  • H64
  • H66
  • NH3 (2,1)
  • NH3 (3,2)
  • NH3 (4,3)
  • NH3 (5,4)
  • NH3 (6,5)

Product Links

[xinglunju]

Log Name: 2024-04-02_1014_22B-193
Project: 22B-193
SBID(s): 43011222
EBID(s): 45337374
Observing Date: 02-Apr-2024
Observation Type: Science
Bands Used: X K
No. of Subarrays: 1
Observer(PI): Prof Elisabeth Mills
Source File(s): 22B-193_sb43011222_1_1
Operator(s): Pete DeSimone
Array Configuration: C
Decommissioned Antenna: 26

Adobe PDF version of this log is located at:
http://www.vla.nrao.edu/operators/logs/

***** WEATHER INFORMATION *****

Time(UTC) Dew Pt Temp Wind Bar Press API RMS Phase(degs)
02Apr 10:14:51 -3.0 -2.0 SW at 4.4 m/s 785.3 2.5
02Apr 11:00:14 -3.2 -2.0 W at 2.4 m/s 785.5 4.0
02Apr 12:00:08 -2.7 -0.6 SW at 2.4 m/s 785.8 2.1
02Apr 13:00:05 -2.8 -0.8 SE at 1.5 m/s 786.7 3.5

*** Operator comments for the above weather entries ***

02Apr 10:14:51 Sky cover 60%. Mixed clouds.
02Apr 11:00:14 Sky cover 60%. Mixed clouds.
02Apr 12:00:08 Sky cover 40%. Mixed clouds.
02Apr 13:00:05 Sky cover 40%. Mixed clouds.

***** COMMENTS AND OUTAGES *****

Outage information format:
Start Time, End Time, Category, Form#, # Antennas, Down Time(minutes)
Antenna ID(s) and Data Effect
Description

Number of Antennas Used: 27

02Apr 10:14:11
Starting project 22B-193.

02Apr 10:14:11
The band(s) used is(are): X K.

02Apr 10:14:11
On source 1331+305=3C286 with all available antennas.

02Apr 10:14:11
To access your data from the NRAO archive visit:
https://science.nrao.edu/facilities/vla/archive
All VLA science data are processed through the VLA calibration pipeline. Details
are at: https://science.nrao.edu/facilities/vla/data-processing/pipeline
For further questions please use the NRAO Helpdesk at:
https://help.nrao.edu/
Adobe PDF version of this log is located at:
http://www.vla.nrao.edu/operators/logs/

02Apr 10:14:11
Note: To support our ongoing RFI monitoring efforts, any feedback from your
program on RFI can be sent to: [email protected]
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:
  https://science.nrao.edu/facilities/vla/docs/manuals/obsguide/modes/rfi/

02Apr 10:14:11 02Apr 13:43:38 FOCUS/ROTATION WO-18988 0.10 20.9
Antenna(s) 18 (Data: Lost):
Frequent subreflector faults or position errors.

02Apr 13:01:52 02Apr 13:06:52 SOFTWARE Other 5.70 28.5
Antenna(s) All (Data: Lost):
The zero-valued visibility fraction across all subbands was given as 0.211.

Project End Time Total Time % Down Time Total Down Time
(minutes x 27 ants) (minutes)

02-Apr-2024 13:43:38 5655.2 0.9% 49.4

[xinglunju]

Issues noted but not flagged by staff:

• There are phase jumps on several antennas
• The low scatter of points on the Corrected Amplitude vs UVwave plot for the complex gain calibrator is from spw-9,10

[namithaissac]

Flagging summary

• ea02 is flagged for most of the fields; ea18 is flagged for all the fields

Step 13

• Final Amp Time Cal plot of ea25 shows a slight deviation from 1.0

Step 17

• Corrected amplitude: Flux and phase calibrators have a few outlier visibilities

• Corrected phase: Some visibilities show large phase difference.