7. Reweight visibilities

Calculate data weights based on st. dev. within each spw.

Statwt Summary Plot

VLASS2.1.sb38520431.eb38554942.59063.924480127316_split_split.ms

Plot of antenna-based weight vs. antenna or spectral window (before re-weight)

Plot of antenna-based weight vs. antenna or spectral window (after re-weight)

Statwt Summary

Summary of before/after-statwt antenna-based weights (Wi) for each antenna. The antenna-based weights are derived from the visibility WEIGHT column: Wij≈WiWj.
Antenna Selection statwt before statwt after
Median 1st/3rd Quartile Mean ± S.Dev. Median 1st/3rd Quartile Mean ± S.Dev.
ea01 1342 1342/1342 1342 ± 0 5.461 5.342/6.03 5.682 ± 0.5325
ea02 1342 1342/1342 1342 ± 0.000009393 5.787 5.403/6.399 5.922 ± 0.623
ea04 1342 1342/1342 1342 ± 0.00001698 5.672 5.265/6.247 5.785 ± 0.5567
ea05 1342 1342/1342 1342 ± 0 5.522 5.221/5.956 5.572 ± 0.453
ea06 1342 1342/1342 1342 ± 0 3.193 3.084/3.46 3.253 ± 0.181
ea07 1342 1342/1342 1342 ± 0 5.26 5.223/5.466 5.341 ± 0.1965
ea08 1342 1342/1342 1342 ± 0.00001856 5.654 5.359/6.232 5.745 ± 0.558
ea09 1342 1342/1342 1342 ± 0 4.599 4.497/4.988 4.659 ± 0.335
ea10 1342 1342/1342 1342 ± 0 5.372 5.206/6.153 5.597 ± 0.5415
ea11 1342 1342/1342 1342 ± 0 5.908 5.502/6.516 6.001 ± 0.6068
ea12 1342 1342/1342 1342 ± 0 5.424 5.122/5.717 5.447 ± 0.3203
ea13 1342 1342/1342 1342 ± 0 5.697 5.573/6.122 5.878 ± 0.4148
ea14 0 N/A 0 ± N/A 0 N/A 0 ± N/A
ea15 0 N/A 0 ± N/A 0 N/A 0 ± N/A
ea16 1342 1342/1342 1342 ± 0 4.97 4.934/5.102 5.006 ± 0.2507
ea17 1342 1342/1342 1342 ± 0.00002182 5.985 5.687/6.51 6.096 ± 0.5365
ea18 1342 1342/1342 1342 ± 0 4.986 4.745/5.421 5.063 ± 0.3801
ea19 1342 1342/1342 1342 ± 0 5.831 5.589/6.072 5.86 ± 0.3302
ea21 1342 1342/1342 1342 ± 0 5.905 5.495/6.411 5.957 ± 0.5568
ea22 1342 1342/1342 1342 ± 0.000002488 5.074 4.838/5.82 5.275 ± 0.5133
ea23 1342 1342/1342 1342 ± 0 6.186 5.577/6.632 6.166 ± 0.6259
ea25 1342 1342/1342 1342 ± 0 5.369 5.303/5.452 5.368 ± 0.1527
ea26 1342 1342/1342 1342 ± 0 5.242 5.025/5.626 5.334 ± 0.3777
ea27 1342 1342/1342 1342 ± 0.00001418 5.286 5.094/5.845 5.426 ± 0.4125
ea28 1342 1342/1342 1342 ± 0.00002504 5.69 5.456/6.441 5.924 ± 0.6237
Summary of before/after-statwt antenna-based weights (Wi) for each spectral window. The antenna-based weights are derived from the visibility WEIGHT column: Wij≈WiWj.
Spw Selection statwt before statwt after
Median 1st/3rd Quartile Mean ± S.Dev. Median 1st/3rd Quartile Mean ± S.Dev.
2 1342 1342/1342 1342 ± 0.0000261 5.44 5.27/5.583 5.379 ± 0.3085
3 1342 1342/1342 1342 ± 0.00003177 5.095 4.858/5.287 5.082 ± 0.2637
4 1342 1342/1342 1342 ± 0.00002898 5.225 5.015/5.334 5.17 ± 0.3141
5 1342 1342/1342 1342 ± 0.0000261 5.314 5.084/5.488 5.271 ± 0.3186
6 1342 1342/1342 1342 ± 0.0000261 5.239 5.127/5.4 5.231 ± 0.2651
7 1342 1342/1342 1342 ± 0.0000261 5.327 5.087/5.507 5.253 ± 0.2844
8 1342 1342/1342 1342 ± 0.0000261 5.235 4.97/5.463 5.222 ± 0.3461
9 1342 1342/1342 1342 ± 0.0000261 5.63 5.227/5.753 5.453 ± 0.4097
10 1342 1342/1342 1342 ± 0.0000261 5.675 5.547/6.098 5.641 ± 0.6501
11 1342 1342/1342 1342 ± 0.0000261 5.888 5.615/6.316 5.782 ± 0.7489
12 1342 1342/1342 1342 ± 0.0000261 6.082 5.725/6.405 5.904 ± 0.7654
13 1342 1342/1342 1342 ± 0.0000261 6.415 5.989/6.835 6.234 ± 0.8433
14 1342 1342/1342 1342 ± 0.0000261 6.518 6.047/6.944 6.353 ± 0.8605
15 1342 1342/1342 1342 ± 0.0000261 6.12 5.716/6.557 5.967 ± 0.8415
16 1342 1342/1342 1342 ± 0.00003805 5.42 4.977/5.75 5.266 ± 0.7338
17 1342 1342/1342 1342 ± 0.00003306 5.385 5.01/5.721 5.351 ± 0.6036
vis
VLASS2.1.sb38520431.eb38554942.59063.924480127316_split_split.ms
overwrite_modelcol
False
statwtmode
VLASS-SE
datacolumn
residual_data
output_dir
 
Start time
2024-03-29 07:08:24.739
End
2024-03-29 07:59:52.922
Duration
0:51:28.183
Note, WebLog generation is not included in the time.

CASA logs for stage 7