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 5.829 5.161/6.407 5.751 ± 0.6386
ea02 1342 1342/1342 1342 ± 0.00004613 6.228 5.087/6.674 5.892 ± 0.9661
ea04 1342 1342/1342 1342 ± 0.000007241 5.476 4.928/6.056 5.465 ± 0.7926
ea05 1342 1342/1342 1342 ± 0.00001392 5.586 4.99/6.314 5.712 ± 0.8135
ea06 1342 1342/1342 1342 ± 0.00001035 4.73 4.323/5.346 4.825 ± 0.6116
ea07 1342 1342/1342 1342 ± 0.00002622 5.708 5.24/6.376 5.818 ± 0.9596
ea08 1342 1342/1342 1342 ± 0.00002017 6.612 5.502/7.152 6.3 ± 0.8448
ea09 1342 1342/1342 1342 ± 0.00004108 5.736 5.047/6.477 5.738 ± 0.8029
ea10 1342 1342/1342 1342 ± 0.00004131 5.767 5.172/6.755 5.843 ± 0.9905
ea11 1342 1342/1342 1342 ± 0.00004066 6.169 4.886/6.497 5.734 ± 0.9865
ea12 1342 1342/1342 1342 ± 0.000014 5.672 5.114/6.492 5.739 ± 0.9463
ea13 1342 1342/1342 1342 ± 0.00003265 5.671 5.368/6.355 5.93 ± 0.7407
ea14 1342 1342/1342 1342 ± 0.00002971 5.447 5.128/6.455 5.723 ± 0.887
ea15 1342 1342/1342 1342 ± 0.000005459 5.033 4.936/6.248 5.551 ± 0.9253
ea16 1342 1342/1342 1342 ± 0.00002443 5.757 5.316/6.914 6.015 ± 1.047
ea17 1342 1342/1342 1342 ± 0.00002009 6.062 5.496/7.043 6.197 ± 0.7904
ea18 1342 1342/1342 1342 ± 0.00003384 4.807 4.566/5.697 5.041 ± 0.6679
ea19 1342 1342/1342 1342 ± 0.00002072 5.873 5.478/6.948 6.1 ± 0.934
ea20 1342 1342/1342 1342 ± 0.00002459 5.81 5.541/6.897 6.085 ± 0.9933
ea21 1342 1342/1342 1342 ± 0.00001888 5.504 5.262/6.46 5.74 ± 0.8683
ea22 1342 1342/1342 1342 ± 0.00004126 5.114 4.871/6.372 5.567 ± 0.8054
ea23 1342 1342/1342 1342 ± 0.00002496 5.514 5.271/6.661 5.858 ± 1.059
ea25 1342 1342/1342 1342 ± 0.00004251 5.246 5.075/6.367 5.595 ± 0.8687
ea26 1342 1342/1342 1342 ± 0.00002157 5.789 5.614/6.958 6.135 ± 0.8781
ea27 1342 1342/1342 1342 ± 0.00003597 5.459 5.281/6.594 5.809 ± 0.8015
ea28 1342 1342/1342 1342 ± 0.00004413 5.667 5.275/6.627 5.862 ± 0.9594
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 5.403 5.111/5.655 5.367 ± 0.3132
6 1342 1342/1342 1342 ± 0.0000235 5.197 4.991/5.305 5.13 ± 0.2939
7 1342 1342/1342 1342 ± 0.00002357 5.209 5.045/5.397 5.169 ± 0.2902
8 1342 1342/1342 1342 ± 0.0000235 5.164 4.995/5.314 5.137 ± 0.3032
9 1342 1342/1342 1342 ± 0.00002516 5.445 5.124/5.71 5.36 ± 0.3701
10 1342 1342/1342 1342 ± 0.0000235 6.085 5.922/6.249 6.026 ± 0.3258
11 1342 1342/1342 1342 ± 0.0000235 6.343 6.153/6.467 6.306 ± 0.3467
12 1342 1342/1342 1342 ± 0.0000235 6.55 6.365/6.697 6.508 ± 0.3821
13 1342 1342/1342 1342 ± 0.0000235 7 6.75/7.198 6.948 ± 0.407
14 1342 1342/1342 1342 ± 0.0000235 7.205 6.982/7.41 7.142 ± 0.4528
15 1342 1342/1342 1342 ± 0.00002419 6.639 6.387/6.952 6.586 ± 0.479
16 1342 1342/1342 1342 ± 0.00006103 4.43 4.241/4.613 4.429 ± 0.2438
17 1342 1342/1342 1342 ± 0.0000606 4.397 4.251/4.686 4.459 ± 0.288
output_dir
 
overwrite_modelcol
False
vis
VLASS2.1.sb38500385.eb38635359.59099.351010810184_split_split.ms
statwtmode
VLASS-SE
datacolumn
residual_data
Start time
2024-11-02 15:21:59.157
End
2024-11-02 16:29:39.713
Duration
1:07:40.556
Note, WebLog generation is not included in the time.

CASA logs for stage 8