ASTROSAT CZTI

Data Quality Report

Orbit 21991

Creation date: 2024-06-27T18:35:00.862872
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/AS1A07_094T01_9000003248_21991cztM0_level2.evt modeM0/AS1A07_094T01_9000003248_21991cztM0_level2_quad_clean.evt
Size (bytes)538,931,520104,434,560
Size514.0 MB 99.6 MB
Events in quadrant A3,608,792678,784
Events in quadrant B3,903,682677,822
Events in quadrant C3,583,212654,982
Events in quadrant D4,723,500635,858

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155193
B0163603
C0153893
D0190203

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7403650.878022%
B74031632.201810%
C74031271.715521%
D74032453.309469%

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 7638 7405 0 0 0.00% 0.00%
B 7638 7404 29 29 0.38% 0.39%
C 7638 7404 0 0 0.00% 0.00%
D 7638 7405 155 155 2.03% 2.09%

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 2 79 22528 116.23 924 903 186.1
A 13 254 13472 67.56 924 903 186.1
A 14 235 11696 58.01 924 903 186.1
B 3 64 153273 861.02 916 892 177.0
B 0 230 82744 462.5 916 892 177.0
B 0 190 29835 163.54 916 892 177.0
C 14 238 138559 660.19 882 885 208.5
C 13 61 6091 24.96 882 885 208.5
C 8 128 3899 14.45 882 885 208.5
D 1 52 740617 3402.13 892 866 217.4
D 13 104 241245 1105.51 892 866 217.4
D 7 238 137722 629.4 892 866 217.4

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