ASTROSAT CZTI

Data Quality Report

Orbit 56395

Creation date: 2026-03-02T11:36:31.099944
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_083T05_9000006554_56395cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56395cztM0_level2_quad_clean.evt
Size (bytes)1,062,325,44083,960,640
Size1013.1 MB 80.1 MB
Events in quadrant A12,539,512525,373
Events in quadrant B6,607,102744,984
Events in quadrant C4,786,402671,642
Events in quadrant D14,797,51162,236

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0426020
B0248350
C0197080
D0492250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7645350445.833878%
B764588211.536952%
C76454756.213211%
D76457645100.000000%

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 7645 7645 3026 3026 39.58% 39.58%
B 7645 7644 496 496 6.49% 6.49%
C 7645 7644 284 284 3.71% 3.72%
D 7644 7644 4287 4287 56.08% 56.08%

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 12 3 5415050 35649.88 610 594 151.9
A 3 79 2376028 15640.34 610 594 151.9
A 0 8 951889 6263.52 610 594 151.9
B 4 206 1670373 9918.59 783 755 168.3
B 5 172 446211 2646.29 783 755 168.3
B 5 185 432494 2564.8 783 755 168.3
C 13 3 1375321 6409.36 781 771 214.5
C 12 252 97298 450.09 781 771 214.5
C 12 249 62323 287.01 781 771 214.5
D 8 129 13914295 488678.93 94 90 28.5
D 13 153 167722 5887.38 94 90 28.5
D 2 120 117689 4130.18 94 90 28.5

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