ASTROSAT CZTI

Data Quality Report

Orbit 57902

Creation date: 2026-06-11T02:44:45.327145
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_125T11_9000006582_57902cztM0_level2.fits modeM0/AS1A14_125T11_9000006582_57902cztM0_level2_quad_clean.evt
Size (bytes)383,656,32096,160,320
Size365.9 MB 91.7 MB
Events in quadrant A2,761,810643,692
Events in quadrant B3,347,385686,197
Events in quadrant C3,451,584598,229
Events in quadrant D4,145,880540,768

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129602
B0144762
C0149152
D0170622

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A636090.141509%
B6360691.084906%
C63601151.808176%
D63593826.007234%

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 7580 6361 0 0 0.00% 0.00%
B 7580 6361 32 32 0.42% 0.50%
C 7580 6361 84 84 1.11% 1.32%
D 7579 6360 371 371 4.90% 5.83%

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 77309 446.02 691 675 171.8
A 13 254 8738 46.93 691 675 171.8
A 3 137 8300 44.38 691 675 171.8
B 10 128 220852 1523.37 681 658 144.5
B 7 252 92428 634.89 681 658 144.5
B 2 249 69615 477.07 681 658 144.5
C 15 224 650167 3624.19 655 648 179.2
C 12 252 88517 490.29 655 648 179.2
C 14 254 79074 437.6 655 648 179.2
D 8 160 1112729 6074.09 645 616 183.1
D 8 240 200254 1090.37 645 616 183.1
D 2 31 103324 560.97 645 616 183.1

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