ASTROSAT CZTI

Data Quality Report

Orbit 57094

Creation date: 2026-04-17T19:04:46.460201
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_083T10_9000006566_57094cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57094cztM0_level2_quad_clean.evt
Size (bytes)471,588,480107,524,800
Size449.7 MB 102.5 MB
Events in quadrant A4,832,336689,149
Events in quadrant B3,657,981754,500
Events in quadrant C3,609,627672,636
Events in quadrant D4,784,333626,805

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193840
B0161131
C0160940
D0192110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73681882.551574%
B7368570.773616%
C7368510.692182%
D73681161.574376%

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 7368 7368 137 137 1.86% 1.86%
B 7368 7368 10 10 0.14% 0.14%
C 7368 7368 37 37 0.50% 0.50%
D 7368 7368 91 91 1.24% 1.24%

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 4 13 1477403 7422.28 798 775 198.9
A 5 113 88112 439.0 798 775 198.9
A 4 249 85123 423.98 798 775 198.9
B 4 171 334683 1961.7 791 762 170.2
B 7 252 56738 328.85 791 762 170.2
B 5 185 27506 157.11 791 762 170.2
C 13 3 218013 1017.95 781 775 213.4
C 14 245 112153 521.91 781 775 213.4
C 14 254 72038 333.93 781 775 213.4
D 15 142 918716 4225.2 775 740 217.3
D 12 33 500277 2299.24 775 740 217.3
D 2 249 69488 316.43 775 740 217.3

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