ASTROSAT CZTI

Data Quality Report

Orbit 56264

Creation date: 2026-02-23T01:32:46.506694
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_049T01_9000006552_56264cztM0_level2.fits modeM0/AS1A14_049T01_9000006552_56264cztM0_level2_quad_clean.evt
Size (bytes)976,124,16076,167,360
Size930.9 MB 72.6 MB
Events in quadrant A15,176,015210,443
Events in quadrant B3,914,528709,882
Events in quadrant C10,742,108358,810
Events in quadrant D5,757,357537,932

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0499255
B0162970
C0368110
D0219450

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7016499771.222919%
B7017761.083084%
C7017338448.225737%
D701771110.132535%

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 7016 7016 4695 4695 66.92% 66.92%
B 7017 7017 22 22 0.31% 0.31%
C 7017 7017 2256 2256 32.15% 32.15%
D 7017 7017 654 654 9.32% 9.32%

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 14 235 4251159 37874.3 445 435 112.2
A 8 176 4182973 37266.76 445 435 112.2
A 12 115 2127456 18951.93 445 435 112.2
B 5 185 174624 1095.0 744 717 158.8
B 7 0 173761 1089.57 744 717 158.8
B 0 171 141609 887.12 744 717 158.8
C 15 230 6289934 42634.62 544 539 147.5
C 12 254 1021387 6920.14 544 539 147.5
C 13 3 780492 5287.15 544 539 147.5
D 8 129 928707 4786.81 681 649 193.9
D 2 249 830765 4281.64 681 649 193.9
D 2 120 614875 3168.1 681 649 193.9

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