VLA archive file 22B-193.sb43003376.eb45228196.60344.54194775463

[xinglunju]

SB 43003376 JACKS region 10

• [x] Observations completed
• [x] VLA CASA Calibration pipeline run by observatory
• [x] 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)

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[xinglunju]

Log Name: 2024-02-04_1300_22B-193 Project: 22B-193 SBID(s): 43003376 EBID(s): 45228196 Observing Date: 04-Feb-2024 Observation Type: Science Bands Used: X K No. of Subarrays: 1 Observer(PI): Prof Elisabeth Mills Source File(s): 22B-193_sb43003376_1_1 Operator(s): Sam Gilmore 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) 04Feb 13:04:30 -5.2 -2.8 W at 5.1 m/s 784.4 5.1 04Feb 14:01:14 -5.8 -4.2 W at 5.4 m/s 785.3 4.5 04Feb 15:01:56 -5.0 -2.4 W at 5.8 m/s 785.9 3.2

Operator comments for the above weather entries

04Feb 13:04:30 Sky cover 40%. Stratiform clouds. 04Feb 14:01:14 Sky cover 30%. Stratiform clouds. 04Feb 15:01:56 Sky cover 10%. Cumuliform 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

04Feb 13:00:24 Starting project 22B-193.

04Feb 13:00:24 The band(s) used is(are): X K.

04Feb 13:00:25 On source 1331+305 with all available antennas.

04Feb 13:00:24 Antenna(s):1,7,8,10,17,26 have recently updated baseline parameters to correct for errors resulting from their recent relocation. Please check for any significant errors and submit them to the NRAO Helpdesk (https://science.nrao.edu/observing/helpdesk) under the VLA Observing department.

04Feb 13:00:24 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/

04Feb 13:00:24 Note: To support our ongoing RFI monitoring efforts, any feedback from your program on RFI can be sent to: nrao-rfi@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: https://science.nrao.edu/facilities/vla/docs/manuals/obsguide/modes/rfi/

04Feb 13:00:24 04Feb 16:29:49 FOCUS/ROTATION WO-20152 1.00 209.4 Antenna(s) 18 (Data: Lost): Drive faults in rotation. Antenna parked.

04Feb 14:53:00 Your new operator(s) is(are): Hannah Brower, Aaron Lovato, and Laura Shishkovsky

04Feb 15:00:03 04Feb 15:05:00 FOCUS/ROTATION Other 1.00 4.9 Antenna(s) 04 (Data: Lost): Frequent subreflector faults or position errors.

04Feb 13:00:24 04Feb 16:29:49 LO-IF WO-19837 0.25 52.4 Antenna(s) 04 (Data: Unknown Effect): RF power for the T304-a bad, IFA0/A1/A2 may be weak

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

04-Feb-2024 16:29:49 5654.3 4.7% 266.7

[xinglunju]

Issues noted but not flagged by staff:

• The wind was at the recommended limit a few times during this observation.
• Major issues automatically flagged by the pipeline:
  • ea18 was flagged for hardware issues during the bandpass calibrator scan, causing it to be missed.

[kelizabeth7]

Flagging Summary

• ea02 and ea26 are flagged in the CMZ fields

Task Summaries

• Flux density bootstrapping and spectral index fitting has a QA score of 0.88 (Max rms of the residuals is 0.007948912926973806)
• warnings in stage 7 (initial test calibrations), stage 9 (Semi-final delay and bandpass calibrations), and stage 13 (Final calibration tables) because ea18 was flagged by pipeline for hardware issues during Bp calibrator scan

Stage 13 Plots

Final Amp Time Cal Plots

• ea26 is flagged in some of the fields, so there should be data missing (this is apparent), but the points fall off and then come back up:

Stage 17 Plots

• CMZ Fields max amplitude ranges from 0.03 to 0.25: