ASTROSAT CZTI

Data Quality Report

Orbit 20210508_A10_053T13_9000004360_level2

Creation date: 2021-05-13T16:48:55.207116
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A10_053T13_9000004360cztM0_level2_bc.evt modeM0/AS1A10_053T13_9000004360cztM0_level2_quad_clean.evt
Size (bytes)1,057,613,760301,184,640
Size1008.6 MB 287.2 MB
Events in quadrant A5,820,3981,904,377
Events in quadrant B12,082,9121,907,273
Events in quadrant C5,531,0481,827,293
Events in quadrant D6,947,0611,821,128

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04940
B04940
C04940
D04940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0490
B0490
C0490
D0490

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0523730
B0741350
C0523440
D0554050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A241563041.258487%
B241565412.239609%
C241564661.929127%
D241565342.210631%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 29106 24153 5 5 0.02% 0.02%
B 29106 24151 2 2 0.01% 0.01%
C 29106 24154 0 0 0.00% 0.00%
D 29106 24150 95 95 0.33% 0.39%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 5 203 391130 1334.49 1375 1355 292.1
A 14 239 57305 191.56 1375 1355 292.1
A 8 192 52706 175.81 1375 1355 292.1
B 6 159 6455473 24915.87 1379 1351 259.0
B 6 36 217564 834.68 1379 1351 259.0
B 0 190 94043 357.83 1379 1351 259.0
C 3 233 429678 1392.98 1305 1302 307.5
C 2 114 46185 145.95 1305 1302 307.5
C 14 254 16752 50.24 1305 1302 307.5
D 13 249 540914 1642.04 1324 1292 328.6
D 8 195 495087 1502.59 1324 1292 328.6
D 2 250 442495 1342.56 1324 1292 328.6

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter