ASTROSAT CZTI

Data Quality Report

Orbit 59241

Creation date: 2026-09-09T05:09:56.085097
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_59241cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59241cztM0_level2_quad_clean.evt
Size (bytes)524,136,96096,307,200
Size499.9 MB 91.8 MB
Events in quadrant A3,679,893639,523
Events in quadrant B3,147,156703,271
Events in quadrant C3,393,675632,165
Events in quadrant D8,670,343482,228

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156953
B0141932
C0148892
D0303772

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65821782.704345%
B65821071.625646%
C6582811.230629%
D6582133220.237010%

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 7759 6644 60 60 0.77% 0.90%
B 7759 6645 20 20 0.26% 0.30%
C 7759 6645 63 63 0.81% 0.95%
D 7759 6645 1279 1279 16.48% 19.25%

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 15 233 777403 4411.73 718 700 176.1
A 10 251 84574 476.41 718 700 176.1
A 0 24 24495 135.16 718 700 176.1
B 10 247 88520 563.67 720 691 155.8
B 4 201 45449 287.24 720 691 155.8
B 5 185 39960 252.02 720 691 155.8
C 5 250 172884 874.36 718 713 196.9
C 12 252 147149 743.66 718 713 196.9
C 10 22 120847 610.09 718 713 196.9
D 12 110 4898142 25814.27 664 634 189.7
D 11 129 465679 2451.21 664 634 189.7
D 12 2 428639 2255.97 664 634 189.7

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