ASTROSAT CZTI

Data Quality Report

Orbit 59353

Creation date: 2026-09-16T17:09:10.636575
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_033T01_9000006608_59353cztM0_level2.fits modeM0/AS1A14_033T01_9000006608_59353cztM0_level2_quad_clean.evt
Size (bytes)504,558,72098,288,640
Size481.2 MB 93.7 MB
Events in quadrant A3,109,055660,704
Events in quadrant B3,409,250714,420
Events in quadrant C4,297,200625,792
Events in quadrant D7,336,251503,969

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141043
B0146372
C0173992
D0264422

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6759991.464714%
B67601512.233728%
C67602343.461538%
D6760129519.156805%

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 8684 6760 4 4 0.05% 0.06%
B 8685 6762 20 20 0.23% 0.30%
C 8685 6761 137 137 1.58% 2.03%
D 8685 6761 1170 1170 13.47% 17.31%

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 15 233 103504 552.0 766 746 186.2
A 3 137 9411 46.55 766 746 186.2
A 0 24 8556 41.95 766 746 186.2
B 5 236 99456 607.54 754 725 162.5
B 5 185 79896 487.17 754 725 162.5
B 4 171 69499 423.2 754 725 162.5
C 3 233 712771 3528.41 734 725 201.8
C 14 95 408877 2022.52 734 725 201.8
C 12 252 241293 1192.09 734 725 201.8
D 12 110 4054239 20416.83 704 673 198.5
D 3 12 239164 1201.22 704 673 198.5
D 2 249 110760 554.48 704 673 198.5

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

TCT plots

Parameter TCT0 TCT_healed
Tct