ASTROSAT CZTI

Data Quality Report

Orbit 56307

Creation date: 2026-02-23T21:17:08.790772
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_049T01_9000006552_56307cztM0_level2.fits modeM0/AS1A14_049T01_9000006552_56307cztM0_level2_quad_clean.evt
Size (bytes)842,688,00085,829,760
Size803.6 MB 81.9 MB
Events in quadrant A15,235,335222,399
Events in quadrant B3,855,477711,385
Events in quadrant C5,857,360605,424
Events in quadrant D5,699,028568,179

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500721
B0166211
C0223591
D0217261

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7046505171.686063%
B70463004.257735%
C70476949.848162%
D70476419.096069%

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 7076 7047 4687 4687 66.24% 66.51%
B 7076 7047 82 82 1.16% 1.16%
C 7077 7048 695 695 9.82% 9.86%
D 7077 7048 551 551 7.79% 7.82%

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 32 9503383 78317.06 481 469 121.3
A 4 95 1232603 10154.48 481 469 121.3
A 4 206 693990 5715.56 481 469 121.3
B 5 185 399076 2442.76 761 734 163.1
B 0 182 162413 991.47 761 734 163.1
B 10 247 66319 402.19 761 734 163.1
C 12 94 2594387 13075.48 720 713 198.4
C 12 252 156305 784.39 720 713 198.4
C 13 3 73002 364.43 720 713 198.4
D 13 153 676470 3254.19 725 691 207.7
D 2 120 617957 2972.42 725 691 207.7
D 11 129 519786 2499.68 725 691 207.7

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