VLA archive file 22B-193_sb42957946_1_1_000.59902.7544236574

[eacmills]

SB 42957946 JACKS region 2

• [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)

    Product Links

[eacmills]

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Log Name: 2022-11-19_1806_22B-193 Project: 22B-193 SBID(s): 42957946 EBID(s):
Observing Date: 19-Nov-2022 Observation Type: Science Bands Used: X K No. Subarrays: 1 Observer(PI): Prof Elisabeth Mills Source File(s): 22B-193_sb42957946_1_1 Operator(s): Katie Grabowski and Deena Mickelson Array Configuration: C Decommissioned Antenna: 20

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) 19Nov 18:07:37 -4.4 2.2 E at 7.4 m/s 790.6 4.4 19Nov 20:00:11 -5.0 3.6 E at 7.7 m/s 789.7 8.7 19Nov 21:21:02 -4.8 3.8 E at 4.8 m/s 789.6 11.1

Operator comments for the above weather entries

19Nov 18:07:37 Sky cover 10%. Stratiform clouds. 19Nov 20:00:11 Sky cover 30%. Mixed clouds.
19Nov 21:21:02 Sky cover 20%. 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

19Nov 18:06:22 Starting project 22B-193.

19Nov 18:06:22 The band(s) used is(are): X K.

19Nov 18:07:05 On source 3C286 with all available antennas.

19Nov 18:06:22 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/

19Nov 18:06:22 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/

19Nov 18:06:22 19Nov 21:39:49 CRYOGENICS WO-15535 1.00 213.5 Antenna(s) 6 (Data: Lost): Antenna excluded due to compressor work.

19Nov 18:06:22 19Nov 21:39:49 FIBER OPTICS WO-15575 0.25 53.4 Antenna(s) 12 (Data: Corrupted): IF A fringes weaker due to D301 issue after power glitch.

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

19-Nov-2022 21:39:49 5763.2 4.6% 266.8

[eacmills]

Pipeline issues noted by staff:

• ea04 and ea26 show variable gain amplitude solutions throughout the observation, likley from pointing performance being p oor.

• ea19 does not point well during the first set of complex gain scans (low gain amplitudes, approching normal with time).

• ea23 does not point well for some scans in the middle of the observation.

• ea17 has very high gain amplitude solutions for some scans for B0D0 spws.

[namithaissac]

Step - 13 ea17: Final amp time cal & Final amp freq cal plots show high amplitude gains

[namithaissac]

Field 2

1. Issue: Missing SPWs in the raw data?
2. Continuum image made using the imaging script (left), compared with the MeerKAT 1.28 GHz continuum map (right).

[namithaissac]

Continuum image after flagging all lines; rms ~ 30 uJy

NH3 (4,4) and H2O maser lines?