ASTROSAT CZTI

Data Quality Report

Orbit 59206

Creation date: 2026-09-07T11:51:52.967440
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/AS1T05_271T01_9000006604_59206cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59206cztM0_level2_quad_clean.evt
Size (bytes)538,202,88099,907,200
Size513.3 MB 95.3 MB
Events in quadrant A3,844,105675,436
Events in quadrant B3,360,364720,902
Events in quadrant C5,586,925579,440
Events in quadrant D6,596,209569,257

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161493
B0148002
C0212742
D0243582

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68882854.137631%
B68891922.787052%
C688984512.265931%
D68896309.145014%

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 8658 6888 96 96 1.11% 1.39%
B 8659 6890 17 17 0.20% 0.25%
C 8659 6890 577 577 6.66% 8.37%
D 8659 6889 398 398 4.60% 5.78%

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 0 24 422121 2160.63 793 771 195.0
A 10 251 296006 1513.93 793 771 195.0
A 15 233 30310 151.47 793 771 195.0
B 10 247 127934 753.13 781 750 168.9
B 7 252 61603 360.35 781 750 168.9
B 5 185 26222 150.83 781 750 168.9
C 5 250 1452472 7301.42 732 725 198.8
C 3 233 496738 2494.65 732 725 198.8
C 15 147 254292 1275.29 732 725 198.8
D 12 110 2568955 12237.46 752 719 209.9
D 11 129 512194 2437.14 752 719 209.9
D 8 240 223595 1061.99 752 719 209.9

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

TCT plots

Parameter TCT0 TCT_healed
Tct