ASTROSAT CZTI

Data Quality Report

Orbit 56113

Creation date: 2026-02-12T12:30:28.425815
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_083T03_9000006548_56113cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56113cztM0_level2_quad_clean.evt
Size (bytes)623,638,08090,930,240
Size594.7 MB 86.7 MB
Events in quadrant A6,840,863541,358
Events in quadrant B3,659,766698,057
Events in quadrant C7,924,513488,142
Events in quadrant D4,151,881568,794

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0248172
B0156262
C0280612
D0169522

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6546125819.217843%
B65461712.612282%
C6546170125.985335%
D65463104.735716%

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 7666 6547 991 991 12.93% 15.14%
B 7666 6547 17 17 0.22% 0.26%
C 7666 6547 1476 1476 19.25% 22.54%
D 7666 6547 211 211 2.75% 3.22%

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 12 115 3288782 19584.21 677 661 167.9
A 15 32 367834 2186.9 677 661 167.9
A 3 14 276184 1641.03 677 661 167.9
B 9 254 563456 3706.57 715 690 151.8
B 0 199 87737 573.32 715 690 151.8
B 4 171 53517 347.94 715 690 151.8
C 13 3 4300193 25827.53 610 604 166.5
C 12 254 552414 3314.71 610 604 166.5
C 9 38 445467 2672.28 610 604 166.5
D 8 240 647908 3284.47 698 668 197.1
D 2 249 409017 2072.2 698 668 197.1
D 6 239 102934 518.96 698 668 197.1

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