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

Pipeline QA summary for this task.
Score Reason
1.00 0.02% data in VLASS1.1.sb34666958.eb34700016.58074.035491539355.ms flagged by statwt flagging agents
vis
/lustre/aoc/cluster/pipeline/vlass_auto/spool/se_calibration/VLASS1.1_T32t01.T31t01.T31t02_P27106v2_2017_11_17T16_44_06.035/working/VLASS1.1.sb34666958.eb34700016.58074.035491539355.ms
output_dir
/lustre/aoc/cluster/pipeline/vlass_auto/spool/se_calibration/VLASS1.1_T32t01.T31t01.T31t02_P27106v2_2017_11_17T16_44_06.035/working
Start time
2019-03-31 16:27:14.840
End
2019-04-01 08:19:36.772
Duration
15:52:21.931
Note, WebLog generation is not included in the time.

CASA logs for stage 18