ASTROSAT CZTI

Data Quality Report

Orbit 57993

Creation date: 2026-06-17T06:10:43.293540
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_031T01_9000006584_57993cztM0_level2.fits modeM0/AS1A14_031T01_9000006584_57993cztM0_level2_quad_clean.evt
Size (bytes)929,666,88090,794,880
Size886.6 MB 86.6 MB
Events in quadrant A7,073,400586,690
Events in quadrant B11,044,093531,506
Events in quadrant C10,739,181481,788
Events in quadrant D4,958,730610,833

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265463
B0381722
C0372702
D0200392

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7738133817.291290%
B7738253532.760403%
C7738222928.805893%
D77381491.925562%

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 8005 7922 927 927 11.58% 11.70%
B 8004 7920 1811 1811 22.63% 22.87%
C 8005 7884 2037 2037 25.45% 25.84%
D 8005 7922 111 111 1.39% 1.40%

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 10 251 3820611 19024.79 803 779 200.8
A 4 236 37242 181.61 803 779 200.8
A 13 248 28400 137.57 803 779 200.8
B 10 128 7567662 46103.76 752 722 164.1
B 5 185 92443 558.84 752 722 164.1
B 4 236 68882 415.28 752 722 164.1
C 15 201 4217546 20977.07 734 726 201.0
C 15 224 3335111 16587.29 734 726 201.0
C 14 254 82213 405.37 734 726 201.0
D 3 224 715272 3016.85 830 793 236.8
D 12 110 712503 3005.16 830 793 236.8
D 8 240 58691 244.47 830 793 236.8

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