This task performs a preliminary phased-up bandpass solution and temporarily applies it, then computes the flagging heuristics by calling hif_correctedampflag which looks for outlier visibility points by statistically examining the scalar difference of the corrected amplitude minus model amplitudes, and then flags those outliers. The philosophy is that only outlier data points that have remained outliers after calibration will be flagged. Note that the phase of the data is not assessed.

Plots are generated at two points in this workflow: after bandpass calibration but before flagging heuristics are run, and after flagging heuristics have been run and applied. If no points were flagged, the "after" plots are not generated or displayed.

Contents

Flagging

Report Files
Measurement Set Flagging Commands Number of Statements
uid___A002_Xeea188_X1f88.ms uid___A002_Xeea188_X1f88.ms-flag_commands.txt 8

Flagged data summary

Measurement Set: uid___A002_Xeea188_X1f88.ms

Summary of flagged data. Each cell states the amount of data flagged as a fraction of the specified data selection.
Data Selection flagged before flagged after
TOTAL 42.223% 42.463%
BANDPASS 26.752% 28.979%
AMPLITUDE 26.752% 28.979%
PHASE 25.336% 25.336%
TARGET 25.343% 25.343%

Amplitude vs time

These plots show amplitude vs time for two cases: 1, the calibrated data before application of any flags; and 2, where flagging was applied, the calibrated data after application of flags.

Data are plotted for all antennas and correlations, with different correlations shown in different colours.

uid___A002_Xeea188_X1f88.ms

Spectral Window 12

Intents: BANDPASS

Calibrated data before flagging.

Spectral Window 14

Intents: BANDPASS

Calibrated data before flagging.

Spectral Window 16

Intents: BANDPASS

Calibrated data before flagging.

Spectral Window 18

Intents: BANDPASS

Calibrated data before flagging.

Spectral Window 12

Intents: BANDPASS

Calibrated data after flagging.

Spectral Window 14

Intents: BANDPASS

Calibrated data after flagging.

Spectral Window 16

Intents: BANDPASS

Calibrated data after flagging.

Spectral Window 18

Intents: BANDPASS

Calibrated data after flagging.

Amplitude vs UV distance

These plots show amplitude vs UV distance for two cases: 1, the calibrated data before application of any flags; and 2, where flagging was applied, the calibrated data after application of flags.

Data are plotted for all antennas and correlations, with different correlations shown in different colours.

uid___A002_Xeea188_X1f88.ms

Spectral Window 12

Intents: BANDPASS

Calibrated data before flagging.

Spectral Window 14

Intents: BANDPASS

Calibrated data before flagging.

Spectral Window 16

Intents: BANDPASS

Calibrated data before flagging.

Spectral Window 18

Intents: BANDPASS

Calibrated data before flagging.

Spectral Window 12

Intents: BANDPASS

Calibrated data after flagging.

Spectral Window 14

Intents: BANDPASS

Calibrated data after flagging.

Spectral Window 16

Intents: BANDPASS

Calibrated data after flagging.

Spectral Window 18

Intents: BANDPASS

Calibrated data after flagging.

minbpsnr
20.0
phaseupsnr
20.0
caltable
uid___A002_Xeea188_X1f88.ms.s12_0.spw12_14_16_18.channel.solintinf.bcal.tbl
minblperant
4
maxchannels
240
bpnsols
8
evenbpints
True
minsnr
2.0
antenna
 
solint
inf
field
J1924-2914
output_dir
 
niter
2
tmantint
0.063
antblpossig
3.2
mode
channel
intent
BANDPASS
bpsnr
50.0
phaseupnsols
2
bandtype
B
hm_phaseup
snr
relaxed_factor
2.0
tmbl
0.175
tmint
0.085
spw
12,14,16,18
refant
CM02,CM10,CM03,CM05,CM08,CM12,CM11,CM07
selectdata
False
phaseupbw
 
vis
uid___A002_Xeea188_X1f88.ms
antnegsig
4.0
unregister_existing
False
opacity
 
phaseupsolint
int
antblnegsig
3.4
antpossig
4.6
hm_bandpass
snr
combine
scan
solnorm
True
Start time
2023-05-05 21:00:08.428
End
2023-05-05 21:05:36.889
Duration
0:05:28.461
Context size
15.9 MiB
Note, WebLog generation is not included in the time.

CASA logs for stage 12