ASTROSAT CZTI

Data Quality Report

Orbit 56799

Creation date: 2026-03-28T22:41:02.234452
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_9000006562_56799cztM0_level2.fits modeM0/AS1A14_083T03_9000006562_56799cztM0_level2_quad_clean.evt
Size (bytes)546,969,60083,108,160
Size521.6 MB 79.3 MB
Events in quadrant A3,338,151574,832
Events in quadrant B5,979,974533,482
Events in quadrant C7,113,815454,739
Events in quadrant D3,337,028524,455

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145611
B0220241
C0255856
D0144491

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61512153.495367%
B6151116518.940010%
C6151134721.898878%
D61511292.097220%

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 7176 6152 185 185 2.58% 3.01%
B 7175 6151 933 933 13.00% 15.17%
C 7175 6151 1319 1319 18.38% 21.44%
D 7176 6152 126 126 1.76% 2.05%

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 4 249 434005 2690.93 649 630 161.1
A 10 251 295361 1830.05 649 630 161.1
A 4 236 35744 218.03 649 630 161.1
B 4 206 2683158 20871.31 600 580 128.5
B 8 128 329556 2559.54 600 580 128.5
B 2 249 270570 2100.61 600 580 128.5
C 13 3 2643023 16944.69 565 559 155.9
C 15 230 1526017 9781.93 565 559 155.9
C 9 38 568470 3641.7 565 559 155.9
D 2 249 593635 3345.43 623 594 177.3
D 3 176 95038 532.77 623 594 177.3
D 8 160 58657 327.54 623 594 177.3

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