ASTROSAT CZTI

Data Quality Report

Orbit 55707

Creation date: 2026-01-15T08:38:38.462109
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/AS1A14_099T04_9000006540_55707cztM0_level2.fits modeM0/AS1A14_099T04_9000006540_55707cztM0_level2_quad_clean.evt
Size (bytes)463,648,32095,509,440
Size442.2 MB 91.1 MB
Events in quadrant A6,535,921550,703
Events in quadrant B2,979,343691,946
Events in quadrant C2,975,208625,703
Events in quadrant D4,167,447570,821

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0241142
B0137142
C0137053
D0171442

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A649598315.134719%
B6495600.923788%
C6494230.354173%
D64942023.110564%

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 7695 6496 922 922 11.98% 14.19%
B 7695 6495 10 10 0.13% 0.15%
C 7694 6495 15 15 0.19% 0.23%
D 7694 6495 192 192 2.50% 2.96%

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 32 3171088 19634.56 662 645 161.5
A 8 62 317108 1959.86 662 645 161.5
A 5 241 289695 1790.09 662 645 161.5
B 0 199 128855 849.76 699 675 150.8
B 0 173 44257 288.92 699 675 150.8
B 12 111 18293 116.8 699 675 150.8
C 14 96 103020 539.89 688 683 189.6
C 12 252 77853 407.12 688 683 189.6
C 6 223 53944 280.99 688 683 189.6
D 11 129 1060326 5560.05 674 642 190.6
D 8 245 233201 1220.21 674 642 190.6
D 2 31 147418 770.12 674 642 190.6

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