8. Reweight visibilities

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

Statwt Summary Plot

VLASS2.1.sb38500385.eb38635359.59099.351010810184_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 5.415 5.33/6.219 5.649 ± 0.7755
ea02 1342 1342/1342 1342 ± 0.00004404 6.04 5.464/6.778 5.994 ± 0.975
ea04 1342 1342/1342 1342 ± 0.00002204 5.444 5.149/6.128 5.515 ± 0.7621
ea05 1342 1342/1342 1342 ± 0.00002866 5.604 5.15/6.444 5.786 ± 0.793
ea06 1342 1342/1342 1342 ± 0.00002863 4.719 4.493/5.305 4.808 ± 0.567
ea07 1342 1342/1342 1342 ± 0.0000495 5.961 5.54/6.402 5.917 ± 0.898
ea08 1342 1342/1342 1342 ± 0.00003954 6.076 5.633/6.913 6.201 ± 0.9852
ea09 1342 1342/1342 1342 ± 0.00002041 5.75 5.197/6.601 5.776 ± 0.8582
ea10 1342 1342/1342 1342 ± 0.00004108 5.975 5.33/6.843 5.935 ± 0.9201
ea11 1342 1342/1342 1342 ± 0.00004232 5.68 5.248/6.556 5.837 ± 0.9357
ea12 1342 1342/1342 1342 ± 0.00003259 5.776 5.433/6.595 5.859 ± 0.9606
ea13 1342 1342/1342 1342 ± 0.00001203 5.995 5.582/6.444 6.027 ± 0.807
ea14 1342 1342/1342 1342 ± 0.00004107 5.664 5.345/6.498 5.82 ± 0.8466
ea15 1342 1342/1342 1342 ± 0.00002283 5.389 5.118/6.287 5.616 ± 0.8748
ea16 1342 1342/1342 1342 ± 0.00003926 5.983 5.582/6.95 6.144 ± 1.008
ea17 1342 1342/1342 1342 ± 0.0000433 5.921 5.502/7.091 6.044 ± 0.9858
ea18 1342 1342/1342 1342 ± 0.00004047 4.933 4.798/5.725 5.151 ± 0.6456
ea19 1342 1342/1342 1342 ± 0.00001382 5.862 5.671/6.964 6.171 ± 0.8584
ea20 1342 1342/1342 1342 ± 0.00003911 5.912 5.799/7.123 6.172 ± 1.031
ea21 1342 1342/1342 1342 ± 0.00003793 5.651 5.411/6.497 5.819 ± 0.8087
ea22 1342 1342/1342 1342 ± 0.00003703 5.454 5.024/6.415 5.605 ± 0.8314
ea23 1342 1342/1342 1342 ± 0.00004259 5.842 5.521/6.733 5.96 ± 0.9687
ea25 1342 1342/1342 1342 ± 0.00004327 5.524 5.204/6.385 5.658 ± 0.8743
ea26 1342 1342/1342 1342 ± 0.00002478 5.928 5.795/6.993 6.146 ± 0.9386
ea27 1342 1342/1342 1342 ± 0.00004119 5.629 5.198/6.631 5.744 ± 0.8702
ea28 1342 1342/1342 1342 ± 0.00004317 5.685 5.431/6.643 5.882 ± 0.9387
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 ± 0.0000235 5.429 5.285/5.755 5.455 ± 0.3106
5 1342 1342/1342 1342 ± 0.000037 5.556 5.327/5.594 5.447 ± 0.2537
6 1342 1342/1342 1342 ± 0.0000235 5.497 5.259/5.693 5.465 ± 0.3312
7 1342 1342/1342 1342 ± 0.0000235 5.445 5.249/5.653 5.418 ± 0.2981
8 1342 1342/1342 1342 ± 0.0000235 5.433 5.194/5.558 5.356 ± 0.3279
9 1342 1342/1342 1342 ± 0.0000235 5.647 5.392/5.92 5.603 ± 0.3754
10 1342 1342/1342 1342 ± 0.0000235 6.145 5.976/6.356 6.098 ± 0.3453
11 1342 1342/1342 1342 ± 0.0000235 6.406 6.232/6.55 6.352 ± 0.3568
12 1342 1342/1342 1342 ± 0.0000235 6.569 6.402/6.775 6.548 ± 0.3961
13 1342 1342/1342 1342 ± 0.0000235 7.001 6.79/7.148 6.957 ± 0.4271
14 1342 1342/1342 1342 ± 0.0000235 7.124 6.9/7.376 7.089 ± 0.4931
15 1342 1342/1342 1342 ± 0.0000241 6.805 6.56/7.052 6.725 ± 0.4898
16 1342 1342/1342 1342 ± 0.00005611 4.231 4.11/4.375 4.24 ± 0.2015
17 1342 1342/1342 1342 ± 0.00005682 4.303 4.169/4.491 4.348 ± 0.2738
overwrite_modelcol
False
statwtmode
VLASS-SE
datacolumn
residual_data
output_dir
 
vis
VLASS2.1.sb38500385.eb38635359.59099.351010810184_split_split.ms
Start time
2024-11-02 16:46:34.547
End
2024-11-02 17:41:53.936
Duration
0:55:19.389
Note, WebLog generation is not included in the time.

CASA logs for stage 8