ASTROSAT CZTI

Data Quality Report

Orbit 54739

Creation date: 2025-11-11T21:22:18.356811
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_103T01_9000006524_54739cztM0_level2.fits modeM0/AS1A14_103T01_9000006524_54739cztM0_level2_quad_clean.evt
Size (bytes)692,648,640108,466,560
Size660.6 MB 103.4 MB
Events in quadrant A4,066,025747,134
Events in quadrant B6,989,726716,972
Events in quadrant C4,324,351703,997
Events in quadrant D9,636,365557,204

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178960
B0264490
C0188700
D0343940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8043220.273530%
B804399512.371006%
C80441291.603680%
D8044155219.293884%

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 8043 8043 11 11 0.14% 0.14%
B 8043 8043 916 916 11.39% 11.39%
C 8044 8044 116 116 1.44% 1.44%
D 8044 8044 1526 1526 18.97% 18.97%

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 0 8 250216 1200.25 833 813 207.8
A 3 14 240797 1154.92 833 813 207.8
A 4 206 98952 472.29 833 813 207.8
B 2 249 2700842 15484.37 800 771 174.4
B 0 173 513100 2938.1 800 771 174.4
B 5 185 181608 1037.06 800 771 174.4
C 15 219 253794 1128.98 813 804 224.1
C 14 254 222065 987.39 813 804 224.1
C 4 5 150111 666.29 813 804 224.1
D 2 62 3862618 18117.72 748 715 213.2
D 11 129 1022861 4795.29 748 715 213.2
D 3 12 901036 4223.76 748 715 213.2

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