ASTROSAT CZTI

Data Quality Report

Orbit 20210622_A10_071T52_9000004480_level2

Creation date: 2025-12-27T04:59:50.313464
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_071T52_9000004480cztM0_level2.fits modeM0/AS1A10_071T52_9000004480cztM0_level2_quad_clean.evt
Size (bytes)754,649,280545,057,280
Size719.7 MB 519.8 MB
Events in quadrant A4,766,3563,051,067
Events in quadrant B4,452,4482,991,773
Events in quadrant C4,515,2622,848,609
Events in quadrant D3,937,9822,432,684

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01576670
B02323830
C01711950
D02013600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015400
B015400
C015400
D015400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7554410921.445515%
B7554420052.654082%
C7554424963.304035%
D7554439625.244626%

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 87719 75535 0 0 0.00% 0.00%
B 87719 75530 0 0 0.00% 0.00%
C 87719 75521 0 0 0.00% 0.00%
D 87719 75476 0 0 0.00% 0.00%

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 0 29 4606 11.25 1240 1163 306.0
A 7 110 3789 8.58 1240 1163 306.0
A 0 30 3613 8.0 1240 1163 306.0
B 2 9 3559 10.62 1176 1126 229.1
B 2 8 3036 8.34 1176 1126 229.1
B 5 232 3009 8.22 1176 1126 229.1
C 12 241 3154 6.69 1195 1117 304.6
C 3 126 3058 6.37 1195 1117 304.6
C 3 187 3004 6.2 1195 1117 304.6
D 6 231 2822 6.05 1122 1020 297.7
D 10 189 2818 6.04 1122 1020 297.7
D 3 14 2742 5.78 1122 1020 297.7

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