ASTROSAT CZTI

Data Quality Report

Orbit 53912

Creation date: 2025-09-15T16:36:49.949639
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_057T04_9000006508_53912cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53912cztM0_level2_quad_clean.evt
Size (bytes)908,746,56096,050,880
Size866.6 MB 91.6 MB
Events in quadrant A4,304,268748,715
Events in quadrant B5,378,860779,978
Events in quadrant C7,981,681605,840
Events in quadrant D15,362,772225,718

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181400
B0214830
C0291020
D0510720

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78821391.763512%
B78834115.213751%
C7883139817.734365%
D7883551469.947989%

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 7882 7882 86 86 1.09% 1.09%
B 7882 7882 239 239 3.03% 3.03%
C 7883 7883 1042 1042 13.22% 13.22%
D 7882 7882 4341 4341 55.07% 55.07%

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 10 253 592353 2731.82 871 848 216.5
A 15 174 90087 412.14 871 848 216.5
A 3 114 46304 209.93 871 848 216.5
B 5 236 770890 4197.32 852 824 183.5
B 5 250 656588 3574.31 852 824 183.5
B 0 213 146708 795.16 852 824 183.5
C 12 254 3436119 16142.9 774 768 212.8
C 15 174 378042 1772.83 774 768 212.8
C 15 158 365277 1712.85 774 768 212.8
D 8 176 13393805 111634.19 423 404 120.0
D 2 165 50296 415.85 423 404 120.0
D 10 172 49243 407.07 423 404 120.0

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