ASTROSAT CZTI

Data Quality Report

Orbit 55465

Creation date: 2025-12-29T04:38:12.048588
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_099T01_9000006536_55465cztM0_level2.fits modeM0/AS1A14_099T01_9000006536_55465cztM0_level2_quad_clean.evt
Size (bytes)596,064,960111,525,120
Size568.5 MB 106.4 MB
Events in quadrant A6,245,104687,024
Events in quadrant B5,927,851736,278
Events in quadrant C3,838,058725,241
Events in quadrant D5,426,568666,897

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01662
B01662
C01662
D01662

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024483123
B023666125
C017753126
D022103128

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A807088310.941760%
B807188310.940404%
C8071861.065543%
D80703724.609665%

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 8328 8079 776 776 9.32% 9.61%
B 8322 8081 644 644 7.74% 7.97%
C 8322 8079 50 50 0.60% 0.62%
D 8329 8082 271 271 3.25% 3.35%

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 3 78 2437078 11841.5 826 806 205.7
A 7 14 310169 1503.66 826 806 205.7
A 0 8 126643 611.63 826 806 205.7
B 5 172 2219960 12768.13 822 793 173.8
B 5 185 121276 693.21 822 793 173.8
B 7 252 114570 654.62 822 793 173.8
C 13 3 230544 984.22 854 844 233.4
C 15 147 92981 394.79 854 844 233.4
C 1 16 78390 332.27 854 844 233.4
D 8 160 339401 1428.64 838 802 237.0
D 6 239 337971 1422.61 838 802 237.0
D 15 107 336542 1416.58 838 802 237.0

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