ASTROSAT CZTI

Data Quality Report

Orbit 35019

Creation date: 2022-06-11T12:48:25.417656
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/AS1T05_010T01_9000005016_35019cztM0_level2.evt modeM0/AS1T05_010T01_9000005016_35019cztM0_level2_quad_clean.evt
Size (bytes)431,945,28082,120,320
Size411.9 MB 78.3 MB
Events in quadrant A2,644,985535,204
Events in quadrant B3,187,736539,374
Events in quadrant C2,883,795528,366
Events in quadrant D3,989,296497,065

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114493
B0130642
C0117342
D0158892

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5536120.216763%
B55361903.432081%
C5536420.758671%
D55361262.276012%

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 9302 5538 3 3 0.03% 0.05%
B 9302 5538 156 156 1.68% 2.82%
C 9302 5538 41 41 0.44% 0.74%
D 9302 5538 114 114 1.23% 2.06%

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 10 83 76494 577.7 650 637 131.3
A 15 223 30389 226.58 650 637 131.3
A 7 3 10876 77.97 650 637 131.3
B 5 172 317120 2568.1 642 627 123.2
B 5 31 124884 1008.25 642 627 123.2
B 5 15 59356 476.54 642 627 123.2
C 15 214 232090 1561.39 636 643 148.2
C 0 10 153687 1032.47 636 643 148.2
C 14 67 15019 96.98 636 643 148.2
D 8 195 1021344 6678.39 630 615 152.8
D 13 249 144339 940.35 630 615 152.8
D 12 233 126432 823.19 630 615 152.8

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