ASTROSAT CZTI

Data Quality Report

Orbit 53023

Creation date: 2025-07-18T12:47:55.609637
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/AS1C09_011T07_9000006488_53023cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53023cztM0_level2_quad_clean.evt
Size (bytes)1,250,017,92068,535,360
Size1.2 GB 65.4 MB
Events in quadrant A16,510,5053,314
Events in quadrant B5,625,391698,329
Events in quadrant C13,442,403349,793
Events in quadrant D10,153,974535,860

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0537516
B0216841
C0447391
D0349821

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6997697499.671288%
B699784812.119480%
C6999399957.136734%
D6999227932.561795%

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 7427 6996 6390 6390 86.04% 91.34%
B 7428 6999 506 506 6.81% 7.23%
C 7429 6999 3686 3686 49.62% 52.66%
D 7428 6998 2021 2021 27.21% 28.88%

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 9 191 14024764 280716.34 185 181 50.0
A 7 206 1220315 24422.23 185 181 50.0
A 15 190 355356 7109.19 185 181 50.0
B 10 44 1745427 11483.48 714 692 151.9
B 10 191 279120 1832.56 714 692 151.9
B 2 249 274224 1800.33 714 692 151.9
C 1 241 6476722 40122.08 566 558 161.4
C 15 224 2343684 14516.48 566 558 161.4
C 9 38 1464456 9069.35 566 558 161.4
D 12 17 5702184 29210.65 660 630 195.2
D 15 78 387549 1982.29 660 630 195.2
D 8 176 336393 1720.21 660 630 195.2

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