ASTROSAT CZTI

Data Quality Report

Orbit 57224

Creation date: 2026-04-30T13:26:02.119457
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_070T08_9000006568_57224cztM0_level2.fits modeM0/AS1A14_070T08_9000006568_57224cztM0_level2_quad_clean.evt
Size (bytes)483,802,560109,301,760
Size461.4 MB 104.2 MB
Events in quadrant A3,318,316722,359
Events in quadrant B3,997,561770,831
Events in quadrant C6,085,064647,923
Events in quadrant D3,911,108634,329

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158640
B0175150
C0234400
D0172510

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7674160.208496%
B76741602.084962%
C76746198.066198%
D76741441.876466%

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 7674 7674 15 15 0.20% 0.20%
B 7674 7674 91 91 1.19% 1.19%
C 7673 7673 471 471 6.14% 6.14%
D 7674 7674 144 144 1.88% 1.88%

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 13 112631 559.46 806 786 199.9
A 10 251 45057 221.45 806 786 199.9
A 4 236 31496 153.61 806 786 199.9
B 4 201 533082 3122.71 799 767 170.5
B 5 185 110098 641.37 799 767 170.5
B 7 252 59702 345.73 799 767 170.5
C 15 224 2753408 13298.46 765 756 207.0
C 12 254 94017 450.55 765 756 207.0
C 14 254 78448 375.34 765 756 207.0
D 9 102 376781 1724.16 776 741 218.1
D 3 12 103917 473.07 776 741 218.1
D 5 173 62950 285.23 776 741 218.1

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