ASTROSAT CZTI

Data Quality Report

Orbit 59357

Creation date: 2026-09-17T00:08:44.481475
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_033T01_9000006608_59357cztM0_level2.fits modeM0/AS1A14_033T01_9000006608_59357cztM0_level2_quad_clean.evt
Size (bytes)497,808,00099,489,600
Size474.7 MB 94.9 MB
Events in quadrant A3,087,732659,893
Events in quadrant B4,399,559688,390
Events in quadrant C4,892,228625,794
Events in quadrant D5,538,979580,918

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138372
B0175022
C0189763
D0210972

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6560701.067073%
B65603835.838415%
C65591792.729075%
D65592343.567617%

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 7650 6561 13 13 0.17% 0.20%
B 7650 6561 218 218 2.85% 3.32%
C 7649 6560 64 64 0.84% 0.98%
D 7649 6560 149 149 1.95% 2.27%

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 3 245 72215 397.04 737 719 180.1
A 8 245 50438 276.1 737 719 180.1
A 13 153 39115 213.22 737 719 180.1
B 4 236 925241 6061.95 721 694 152.5
B 5 236 249112 1628.79 721 694 152.5
B 0 186 99882 650.34 721 694 152.5
C 12 252 1456945 7383.39 721 716 197.2
C 3 233 244849 1237.81 721 716 197.2
C 14 95 132448 667.91 721 716 197.2
D 12 110 2011406 9929.94 714 681 202.5
D 7 222 240775 1185.7 714 681 202.5
D 5 38 124464 611.3 714 681 202.5

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

TCT plots

Parameter TCT0 TCT_healed
Tct