ASTROSAT CZTI

Data Quality Report

Orbit 21932

Creation date: 2024-06-27T18:34:08.256618
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_100T03_9000003242_21932cztM0_level2.evt modeM0/AS1A07_100T03_9000003242_21932cztM0_level2_quad_clean.evt
Size (bytes)638,971,200131,944,320
Size609.4 MB 125.8 MB
Events in quadrant A6,453,180848,754
Events in quadrant B3,530,075923,787
Events in quadrant C3,288,218906,424
Events in quadrant D5,611,120834,413

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0239652
B0150272
C0142932
D0215804

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6923106715.412393%
B6923911.314459%
C6923801.155568%
D69226859.895984%

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 7578 6923 684 684 9.03% 9.88%
B 7578 6924 24 24 0.32% 0.35%
C 7578 6923 0 0 0.00% 0.00%
D 7577 6922 516 516 6.81% 7.45%

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 15 236 3429412 21923.16 778 762 156.4
A 13 254 12316 73.88 778 762 156.4
A 4 2 8237 47.8 778 762 156.4
B 3 64 210200 1351.92 827 806 154.9
B 0 219 25018 156.32 827 806 154.9
B 0 190 23800 148.46 827 806 154.9
C 14 238 128513 681.12 809 812 187.5
C 4 175 6350 29.54 809 812 187.5
C 13 61 5524 25.13 809 812 187.5
D 12 235 1158925 6164.67 780 758 187.9
D 1 52 1077437 5730.93 780 758 187.9
D 7 238 234922 1246.4 780 758 187.9

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