ASTROSAT CZTI

Data Quality Report

Orbit 53732

Creation date: 2025-09-03T12:58:52.443464
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_022T04_9000006506_53732cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53732cztM0_level2_quad_clean.evt
Size (bytes)1,061,988,48066,049,920
Size1012.8 MB 63.0 MB
Events in quadrant A15,714,48692,587
Events in quadrant B3,033,849689,170
Events in quadrant C11,499,216347,690
Events in quadrant D8,557,103412,657

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0511872
B0138092
C0387002
D0299352

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6558580988.578835%
B65581722.622751%
C6558322049.100335%
D6558210532.098201%

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 7638 6558 5538 5538 72.51% 84.45%
B 7638 6559 6 6 0.08% 0.09%
C 7638 6559 2639 2639 34.55% 40.23%
D 7638 6559 1783 1783 23.34% 27.18%

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 3 63 13354470 151218.96 351 342 88.3
A 3 78 400199 4527.89 351 342 88.3
A 8 246 386993 4378.34 351 342 88.3
B 4 171 46002 292.25 719 695 155.0
B 0 213 43312 274.9 719 695 155.0
B 7 0 29278 184.37 719 695 155.0
C 15 224 5608979 39264.03 523 520 142.8
C 1 241 3276510 22934.74 523 520 142.8
C 3 242 191108 1334.28 523 520 142.8
D 1 241 3820504 23246.92 576 552 164.3
D 2 172 725444 4411.44 576 552 164.3
D 6 239 683699 4157.4 576 552 164.3

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