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| Obsid | Duration (sec) | Files | Pulsar(s) / Calibrator(s) | RA/Dec | PC RA/Dec | Az/El | Goal | Processing | Download folder | VCSBeam version* |
|---|---|---|---|---|---|---|---|---|---|---|
| 1323690320 | 296 | 24 | In-beam calibration (for 1323690616) | 11.8 / -5.8 | 8.5 / -7.4 | 341.6 / 68.0 | 1, 5 |
| /astro/mwavcs/asvo/253001 | v3.3.31_c279695 |
| 1323690616 | 1200 | 3600 VCS | B0031-07 J0036-1033 J0034-0534 | 8.0 / -5.2 | 8.5 / -7.4 | 326.3 / 64.7 | 1, 5 |
| /astro/mwavcs/asvo/253008 | |
| 1323708616 | 296 | 24 | In-beam calibration (for 1323709032) | 95.1 / -26.7 | 97.7 / -28.6 | 0.0 / 90.0 | 1, 4 |
| /astro/mwavcs/asvo/253000 | |
| 1323708912 | 120 | 24 | PicA (for 1323709032) | 75.9 / -46.4 | 80.0 / -45.8 | 213.7 / 64.7 | 1, 4 |
| /astro/mwavcs/asvo/252998 | |
| 1323709032 | 600 | 1800 VCS | B0628-28 | 97.5 / -26.7 | 97.7 / -28.6 | 0.0 / 90.0 | 1, 4 |
| /astro/mwavcs/asvo/253009 | |
| 1323776720 | 120 | 24 | PKS2356-61 (for 1323776840) | 4.3 / -62.7 | 359.8 / -60.9 | 191.3 / 52.8 | 1, 2 |
| /astro/mwavcs/asvo/252999 | |
| 1323776840 | 1200 | 3600 VCS | J2241-5236 | 346.9 / -51.9 | 340.4 / -52.6 | 216.9 / 53.6 | 1, 2 |
| /astro/mwavcs/asvo/253010 |
*VCSBeam version is the earliest version that was successfully used for the processing
Processing details
1323690320
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Run Hyperdrive
Create Hyperdrive batch script:
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cd /astro/mwavcs/vcs/1323690320/hyperdrive sbatch hyperdrive.sbatch |
Run VCSBeam plotting
VCSBeam: v3.3.30_edafd20
Create VCSBeam plotting script:
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plot_calibration.py --phases_png phases.png --amps_png amps.png plot_data.txt |
Iterative step
It looks like the solutions are probably fine for most, if not all the antennas (except possibly HexE23, since there's a lot of power in the off-diagonal terms, Dpq and Dqp), but the curviness of the phases makes it hard to tell. Therefore, I will choose a reference antenna to plot all the phases relative to that. Since there's a bunch of tiles whose phases are strongly sloped (in the middle), I'll choose a reference tile with a negative slope as well, but whose gradient is not as steep... HexE25 will do. To do this, I need to re-run the plotting script with the following change:
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-R NONE --> -R HexE25 |
If I want to keep the old plots, I just make sure I rename the various output files to something different. Remaking the plots gives:
These solutions look fine (the on-diagonal terms, Dpp and Dqq, look straight). At the moment, I'm not trying to do polarimetry, so I don't need to worry about either the reference antenna or the PQ phase. By default, I should probably get rid of the cross terms (taking guidance from the imaging team). Therefore, I should be able to simply apply this solution with the following options to make_mwa_tied_array_beam:
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-R NONE -U 0,0
# (and without -X) |
1323690616
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