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

[xinglunju]

SB 43004029 JACKS region 13

• [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: 2024-03-07_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: 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/

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: