VLA archive file 22B-193.sb43004029.eb45297231.60376.4681131713

[xinglunju]

SB 43004029
JACKS region 13

• 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: 2024-03-07_1114_22B-193
Project: 22B-193
SBID(s): 43004029
EBID(s): 45297231
Observing Date: 07-Mar-2024
Observation Type: Science
Bands Used: X K
No. of Subarrays: 1
Observer(PI): Prof Elisabeth Mills
Source File(s): 22B-193_sb43004029_1_1
Operator(s): Pete DeSimone
Array Configuration: C
Decommissioned Antenna: 28

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)
07Mar 11:15:06 -7.4 -2.9 SW at 1.6 m/s 779.3 2.7
07Mar 12:00:10 -8.5 -5.6 NW at 2.3 m/s 779.2 2.6
07Mar 13:00:05 -10.0 -7.1 SW at 0.5 m/s 779.2 5.3
07Mar 14:02:32 -7.1 -1.6 SW at 3.6 m/s 779.5 3.4

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

07Mar 11:15:06 Sky cover 10%. Mixed clouds.
07Mar 12:00:10 Sky cover 30%. Mixed clouds.
07Mar 13:00:05 Sky cover 30%. Mixed clouds.
07Mar 14:02:32 Sky cover 10%. 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: 28

07Mar 11:14:03
Starting project 22B-193.

07Mar 11:14:03
The band(s) used is(are): X K.

07Mar 11:14:46
On source 1331+305=3C286 with all available antennas.

07Mar 11:14:03
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://science.nrao.edu/observing/helpdesk
Adobe PDF version of this log is located at:
http://www.vla.nrao.edu/operators/logs/

07Mar 11:14:03
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/

07Mar 11:41:07 07Mar 11:46:07 SOFTWARE Other 4.42 22.1
Antenna(s) All (Data: Lost):
The zero-valued visibility fraction across all subbands was given as 0.158.

07Mar 11:14:03 07Mar 14:43:29 FOCUS/ROTATION WO-18988 0.10 20.9
Antenna(s) 18 (Data: Lost):
Frequent subreflector faults or position errors.

07Mar 11:14:03 07Mar 14:43:29 FOCUS/ROTATION WO-20447 0.10 20.9
Antenna(s) 27 (Data: Lost):
Frequent subreflector faults or position errors.

07Mar 14:01:43 07Mar 14:06:43 SOFTWARE Other 7.10 35.5
Antenna(s) All (Data: Lost):
The zero-valued visibility fraction across all subbands was given as 0.263.

Project End Time Total Time % Down Time Total Down Time
(minutes x 28 ants) (minutes)

07-Mar-2024 14:43:29 5864.1 1.7% 99.5

[xinglunju]

Issues noted but not flagged by staff:

• ea09 had a hardware issue in A0C0.
• ea28 had low gain amplitudes.
• There is decorrelation in the complex gain calibrator.

[kelizabeth7]

Flagging Summary

• ea02 is flagged by the pipeline for almost every CMZ field

Task Summary

• Flux density bootstrapping and spectral index fitting has a QA score of 0.91 (Max rms of the residuals is 0.004459622614232445)
• Task 19: Tclean/Make Images: Warning! tclean stopped to prevent divergence (stop code 6). Field: "1331+305=3C286" SPW: 2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30 iter1 !

Stage 13 Plots

Final Amp Time Cal Plots

• ea09 (hardware issues) has diverging points:
  
• ea28 drops off in gain amp over time:
  

Final Amp Freq Cal Plots

• ea09 and ea28 in frequency:
  
  

Stage 17 Plots

• calibrated phase vs time plot for all calibrators:
  

• decorrelation in calibrator: