Time -

• Time: March 14, 2022 at 10-11:30 am EDT

Cyber link -

• Host: Emily Moravec
• Meeting room hosted by Emily
• ID: talked to EM
• PW: talked to EM
• Recorded: talked to EM

Agenda -

• 1. Introduction -
• 1.1 Review the SMA observations (21A-S058 & 21B-S010) -
• 1.2 E2E reduction of the SMA data with CASA -
• 1.2.1 Inspect and edit raw data with full spectral resolution -


• 1.2.2 Preparing by average the spectral channels or re-chunk -


• 1.2.3 Calibrations -
• Tsys correction (atmosphere attenuation)
• Bandpass for flux calibrator
• FLux scale (solar system objects or known-flux QSOs)
• Check the time-denpendet bandpass
• Complex gains
• 1.2.4 Imaging -
• Wideband continuum
• Redshifted CO(3-2) line cube
• 1.2.5 Assitance to SMA -
• Debugging pyuvdata
• Fine-tuning procedures via CASA paths for SMA data reduction
Emily:
CASA ?
Python 2 or Python 3?
Jun-Hui:
CASA 5.8.0-109 (RTDC here)
Python 2


• 2. A summary of SMA observations (21A and 21B) -
  MOO 1506 -
  
  • 22 June 2021 (2021A-S058)
  • Unsatifactory
  Antenna time lost: 31.8h/90.2h
  τ ~ 0.24 - 0.14
  
  • 25 July 2021 (2021A-S058)
  • Unsatifactory
  Antenna time lost: 20.2h/78.8h
  τ ~ 0.32 - 0.14
  
  
  COBRA 1514 -
  
  • 23 June 2021 (2021A-S058)
  • Unsatifactory
  Antenna time lost: 26.7h/85.5h
  τ ~ 0.25 - 0.16
  
  • 26 July 2021 (2021A-S058)
  • Unsatifactory
  Antenna time lost: 94.7h/107.8h
  τ ~ 0.26 - 0.08
  
  
  MOO 1142 -
  
  • 05 Febuary 2022 (2021B-S010)
  • Unsatifactory
  Antenna time lost: 63.9h/72.8h
  τ ~ no opacity plot
  
  
  
  
  
• 3. Review of the results from the pipeline-processed SMA observations -
MOO 1506 -

• listobs for 22 June 2021 (2021A-S058)
• UV-coverage & Fringe amplitude -








Fig. 1: left: UV coverage (uwave - vwave). right: Fringe amplitude (time - amp), antenna based. Only 6 antennas are available. Click the plots for enlargement.

• Spectra -















Fig. 2: Field-based spectra. Click the plots for enlargement.

• The sensitivity of data is below what was requested, not adequate for detections of target sources by the data alone.


• listobs for 25 July 2021 (2021A-S058)
• UV-coverage & Fringe amplitude -








Fig. 3: left: UV coverage (uwave - vwave). right: Fringe amplitude (time - amp), antenna based. Only 6 antennas are available. Click the plots for enlargement.

• Spectra -















Fig. 4: Field-based spectra. Click the plots for enlargement.

• The sensitivity of data is below what was requested, not adequate for detections of target sources by the data alone.
COBRA 1514 -

• listobs for 23 June 2021 (2021A-S058)
• UV-coverage & Fringe amplitude -









Fig. 5: left: UV coverage (uwave - vwave). right: Fringe amplitude (time - amp), antenna based. Only 6 antennas are available. Click the plots for enlargement.

• Spectra -
















Fig. 6: Field-based spectra. Click the plots for enlargement.

• The sensitivity of data is below what was requested, not adequate for detections of target sources by the data alone.


• listobs for 26 July 2021 (2021A-S058)
• UV-coverage & Fringe amplitude -









Fig. 7: left: UV coverage (uwave - vwave). right: Fringe amplitude (time - amp), antenna based. Only 6 antennas are available. Click the plots for enlargement.

• Spectra -
















Fig. 8: Field-based spectra. Click the plots for enlargement.

• The data is not adequate for calibations.
MOO 1142 -


• 2022-02-05: the data quality is poor. I run out of working space and are waiting for new disk space for pipeline processing it.



• 4. Next steps
• 4.1 Official pipeline: pyuvdata
• Check with RTDC for a downloading site
• Download the beta version (available to SMA staff)
• Report any issues to SMA (e.g. descriptions of bugs with version? on MacOS ? or on Linux ?)
• 4.2 Discussion alternative ways to get the SMA SWARM in CASA measurementSet format if pyuvdata has not been available to public yet
• 4.3 Reduce SMA data on CASA
• Once we have a Satifactory data set, hopefully from 21B or 22A seasons, we will proceed next steps.
• Setup a time for next Zoom meeting to go through E2E SMA data reduction on CASA.