ASTROSAT CZTI

Data Quality Report

Orbit 56592

Creation date: 2026-03-14T23:34:28.814401
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_083T06_9000006558_56592cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56592cztM0_level2_quad_clean.evt
Size (bytes)433,779,84085,872,960
Size413.7 MB 81.9 MB
Events in quadrant A5,987,286535,442
Events in quadrant B2,813,850616,039
Events in quadrant C2,646,903543,358
Events in quadrant D4,149,221491,948

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220131
B0126821
C0125751
D0165961

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59175238.838939%
B5916480.811359%
C5917410.692919%
D59173365.678553%

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 6997 5917 470 470 6.72% 7.94%
B 6996 5917 11 11 0.16% 0.19%
C 6997 5918 25 25 0.36% 0.42%
D 6997 5917 326 326 4.66% 5.51%

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 7 64 2049730 13534.1 610 596 151.4
A 12 3 530056 3496.97 610 596 151.4
A 13 248 334940 2208.27 610 596 151.4
B 4 206 113182 828.52 628 605 135.9
B 5 185 86911 635.18 628 605 135.9
B 4 21 36862 266.84 628 605 135.9
C 14 254 112202 666.5 603 597 167.5
C 6 223 67316 398.44 603 597 167.5
C 13 3 41366 243.47 603 597 167.5
D 2 249 672219 3966.01 590 561 169.4
D 6 239 616871 3639.19 590 561 169.4
D 3 12 149818 881.33 590 561 169.4

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