VLA archive file 22B-193.sb43004232.eb45281789.60364.511281134255

[xinglunju]

SB 43004232 JACKS region 14

• [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: 2024-02-24_1216_22B-193 Project: 22B-193 SBID(s): 43004232 EBID(s): 45281789 Observing Date: 24-Feb-2024 Observation Type: Science Bands Used: X K No. of Subarrays: 1 Observer(PI): Prof Elisabeth Mills Source File(s): 22B-193_sb43004232_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) 24Feb 12:17:33 -11.5 -6.9 NW at 0.8 m/s 790.4 2.0 24Feb 13:11:07 -11.3 -6.7 SE at 0.7 m/s 790.7 1.9 24Feb 14:30:51 -10.6 -6.4 SW at 0.5 m/s 791.3 2.9 24Feb 15:00:43 -9.9 -5.4 W at 1.4 m/s 791.5 3.4

Operator comments for the above weather entries

24Feb 12:17:33 Sky cover 10%. Stratiform clouds. 24Feb 13:11:07 Sky cover 10%. Stratiform clouds. 24Feb 14:30:51 Sky cover 10%. Stratiform clouds. 24Feb 15:00:43 Sky cover 10%. Stratiform 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

24Feb 12:16:14 Starting project 22B-193.

24Feb 12:16:14 The band(s) used is(are): X K.

24Feb 12:16:15 On source 1331+305 with all available antennas.

24Feb 12:16:14 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/

24Feb 12:16:14 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/

24Feb 12:16:14 24Feb 15:45:37 SERVO WO-20306 1.00 209.4 Antenna(s) 19 (Data: Lost): Elevation motor oscillating, antenna parked

24Feb 12:16:14 24Feb 15:45:37 FOCUS/ROTATION WO-20283 0.89 186.4 Antenna(s) 27 (Data: Lost): Fringe amplitudes weak/dead at K-band.

24Feb 12:16:14 24Feb 15:45:37 FOCUS/ROTATION Other 0.02 4.2 Antenna(s) 18 (Data: Lost): Frequent subreflector faults or position errors.

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

24-Feb-2024 15:45:37 5653.3 7.1% 399.9

[xinglunju]

Issues noted but not flagged by staff:

• High weights for ea04, scan=53, A0C0 spws.
• Low amps in uvwave for both cals from baselines with ea15 from spw=10.

[kelizabeth7]

Flagging Summary

• e02 and ea27 are flagged by the pipeline
• ea27 was completely flagged in this observation

Task Summary

• Initial test calibrations has a QA score of 0.87 (1 of 26 (3.85%) antennas affected and some of their spws are flagged)
• Reweight visibilities has a QA score of 0.10 (High mean and variance of weights; possibly erroneous weights present that may require flagging)

Stage 13 Plots

Bp Initial Gain Phase Plots

• ea26 missing data?

Final Amp Time Cal Plots

• divergence in points in ea09 and ea25

Stage 17 Plots

• calibrated phase vs time plot: very large spread on the phase that I have not seen in the other fields:

• Some fall-off of blue data points:

• CMZ fields corrected amp range from 0.05 to 0.5: