8. Reweight visibilities

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

Statwt Summary Plot

VLASS2.1.sb38458451.eb38565931.59072.733167094906_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 5.068 4.813/5.64 5.231 ± 0.5134
ea02 1342 1342/1342 1342 ± 0.00002617 5.296 4.949/6.132 5.531 ± 0.6198
ea05 1342 1342/1342 1342 ± 0.000008229 5.358 4.885/6.016 5.438 ± 0.6064
ea06 1342 1342/1342 1342 ± 0.000004929 4.738 4.599/5.269 4.933 ± 0.4503
ea07 1342 1342/1342 1342 ± 0.00001723 5.274 4.974/5.572 5.355 ± 0.4659
ea08 1342 1342/1342 1342 ± 0.0000316 5.518 5.061/6.306 5.732 ± 0.6687
ea09 1342 1342/1342 1342 ± 0.000007216 4.912 4.631/5.611 5.047 ± 0.5256
ea10 1342 1342/1342 1342 ± 0.00001823 5.304 4.765/6.092 5.437 ± 0.6443
ea11 1342 1342/1342 1342 ± 0.00001604 5.28 4.937/6.083 5.524 ± 0.6191
ea12 1342 1342/1342 1342 ± 0.000009811 5.116 4.925/6.024 5.41 ± 0.6114
ea13 1342 1342/1342 1342 ± 0.000005362 5.415 5.31/5.983 5.668 ± 0.5058
ea14 1342 1342/1342 1342 ± 0.00001231 5.679 5.02/6.137 5.624 ± 0.6108
ea15 1342 1342/1342 1342 ± 0 5.218 4.838/5.803 5.358 ± 0.5883
ea16 1342 1342/1342 1342 ± 0 4.927 4.841/5.114 4.923 ± 0.2014
ea17 1342 1342/1342 1342 ± 0.00004329 5.438 5.042/6.349 5.634 ± 0.6355
ea18 1342 1342/1342 1342 ± 0.00001997 4.659 4.495/5.388 4.839 ± 0.4999
ea19 1342 1342/1342 1342 ± 0.00000699 5.558 5.015/6.203 5.608 ± 0.5903
ea20 1342 1342/1342 1342 ± 0.00001595 5.509 5.215/6.307 5.728 ± 0.6499
ea21 1342 1342/1342 1342 ± 0.00001265 5.312 4.964/5.929 5.436 ± 0.5401
ea22 1342 1342/1342 1342 ± 0.00001824 5.138 4.859/6.128 5.457 ± 0.6446
ea23 1342 1342/1342 1342 ± 0.00001736 5.492 5.105/6.169 5.668 ± 0.6468
ea25 1342 1342/1342 1342 ± 0 4.883 4.725/5.021 4.918 ± 0.1797
ea26 1342 1342/1342 1342 ± 0.000004751 5.194 5.058/6.131 5.483 ± 0.5905
ea27 1342 1342/1342 1342 ± 0.00003758 5.221 4.959/6.031 5.42 ± 0.5657
ea28 1342 1342/1342 1342 ± 0.00004276 5.255 4.945/6.078 5.495 ± 0.6464
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 ± 0.00002406 5.023 4.825/5.199 5.02 ± 0.2283
4 1342 1342/1342 1342 ± 0.00002566 4.735 4.543/4.823 4.678 ± 0.2437
5 1342 1342/1342 1342 ± 0.00002406 4.877 4.787/4.994 4.888 ± 0.2389
6 1342 1342/1342 1342 ± 0.00002406 4.944 4.869/5.048 4.945 ± 0.206
7 1342 1342/1342 1342 ± 0.00002406 4.926 4.82/5.019 4.919 ± 0.1875
8 1342 1342/1342 1342 ± 0.00002406 4.967 4.753/5.056 4.927 ± 0.2253
9 1342 1342/1342 1342 ± 0.00002406 5.231 5.104/5.417 5.198 ± 0.261
10 1342 1342/1342 1342 ± 0.00002504 5.632 5.409/5.746 5.592 ± 0.2677
11 1342 1342/1342 1342 ± 0.00002504 5.943 5.769/5.998 5.838 ± 0.2887
12 1342 1342/1342 1342 ± 0.00002504 6.089 5.809/6.151 6.001 ± 0.2865
13 1342 1342/1342 1342 ± 0.00002516 6.352 6.178/6.553 6.342 ± 0.2982
14 1342 1342/1342 1342 ± 0.00002926 6.509 6.323/6.652 6.438 ± 0.3226
15 1342 1342/1342 1342 ± 0.00002504 6.265 6.067/6.422 6.194 ± 0.3433
16 1342 1342/1342 1342 ± 0.00005253 5.244 5.008/5.396 5.189 ± 0.3163
17 1342 1342/1342 1342 ± 0.00005489 5.208 4.969/5.41 5.195 ± 0.3422
overwrite_modelcol
False
vis
VLASS2.1.sb38458451.eb38565931.59072.733167094906_split_split.ms
datacolumn
residual_data
statwtmode
VLASS-SE
output_dir
 
Start time
2024-11-07 13:57:26.675
End
2024-11-07 14:46:46.309
Duration
0:49:19.634
Note, WebLog generation is not included in the time.

CASA logs for stage 8