VLA archive file 22B-193.sb43010207.eb45331453.60399.397591354165

[xinglunju]

SB 43010207
JACKS region 24

• 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: 2024-03-30_0932_22B-193
Project: 22B-193
SBID(s): 43010207
EBID(s): 45331453
Observing Date: 30-Mar-2024
Observation Type: Science
Bands Used: X K
No. of Subarrays: 1
Observer(PI): Prof Elisabeth Mills
Source File(s): 22B-193_sb43010207_1_1
Operator(s): Sam Gilmore
Array Configuration: C
Decommissioned Antenna: 26

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)
30Mar 09:35:27 -6.3 2.9 SW at 2.2 m/s 783.7 2.3
30Mar 10:00:17 -6.3 2.8 W at 1.2 m/s 783.8 1.8
30Mar 11:00:13 -6.9 3.1 SW at 2.3 m/s 783.8 2.2
30Mar 12:00:15 -7.7 4.2 SW at 3.5 m/s 784.0 3.6
30Mar 13:00:23 -7.6 3.3 NE at 1.4 m/s 784.3 2.0

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

30Mar 09:35:27 Sky cover 30%. Stratiform clouds.
30Mar 10:00:17 Sky cover 30%. Stratiform clouds.
30Mar 11:00:13 Sky cover 20%. Stratiform clouds.
30Mar 12:00:15 Sky cover 20%. Stratiform clouds.
3/30/2024 13:00

***** 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

3/30/2024 09:32
Starting project 22B-193.

3/30/2024 09:32
The band(s) used is(are): X K.

3/30/2024 09:35
On source 1331+305 with all available antennas.

3/30/2024 09:32
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://help.nrao.edu/
Adobe PDF version of this log is located at:
http://www.vla.nrao.edu/operators/logs/

3/30/2024 09:32
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/

30Mar 09:32:31 30Mar 13:01:57 FOCUS/ROTATION Other 0.03 6.3
Antenna(s) 4 (Data: Lost):
Frequent subreflector faults or position errors.

30Mar 09:32:31 30Mar 13:01:57 FOCUS/ROTATION Other 0.04 8.4
Antenna(s) 27 (Data: Lost):
Frequent subreflector faults or position errors.

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

30-Mar-2024 13:01:57 5654.7 0.3% 14.7

[xinglunju]

Issues noted but not flagged by staff:

• ea24 has a DTS hardware failure affecting B0D0 spws.
• ea18 has some spread in gain amplitude solutions for A0C0 spws.

[rpcosgrove]

Weblog analysis:

Flagging Summary

• Amplitude and bandpass calibration 3C286: Average flagging fraction is roughly 75~80%. Half of the spws of ea24 have been flagged, resulting in the corresponding phase calibrator and science target data for these spws also being flagged. Should be double-checked when re-running pipeline.
• Phase calibrator J1744: Average flagging fraction is roughly 35~40%. Antennae ea02 and ea27 have significantly higher fractions (~88% and ~50% respectively), leading to additional flagging in the data from these antennae for the science targets.
• Science data: Average flagging fraction is roughly <20%. Outliers common in data from ea02 and ea27, with several having 100% flagging fractions, along with spws 16+ from ea24 as expected. Additional less severe outliers in ea18 for target 24a and ea04 for 24h and 24k.

Task Notes

• [7. hifv_testBPdcals]: BP Amp and BP Phase solutions for ea24 is a mess; all others look fine
  
  
• [13. hifv_finalcals]:
  • Final Amp Time Cal plots all very flat
    
  • Final Amp Freq Cal plots similarly well-behaved
    
  • Final Phase Gain Cal plots much less flat. Note phase wrapping, which is fine
    
• [19. hif_makeimages (cals)]: Calibrator images look good
  
  
• pbcor image max values from (19.) are consistent with fluxes of calibrators in (4.) and (12.) as expected. pbcor image max for 3C286 is 2.43 [Jy/beam]; for J1744, it is 470 [mJy/beam]