ASTROSAT CZTI

Data Quality Report

Orbit 56743

Creation date: 2026-03-25T17:51:39.578874
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_083T05_9000006560_56743cztM0_level2.fits modeM0/AS1A14_083T05_9000006560_56743cztM0_level2_quad_clean.evt
Size (bytes)548,619,840105,874,560
Size523.2 MB 101.0 MB
Events in quadrant A4,393,407710,597
Events in quadrant B5,362,178706,016
Events in quadrant C5,807,992614,747
Events in quadrant D4,150,109642,021

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181293
B0213303
C0230103
D0180703

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76481932.523536%
B764881110.604079%
C764889711.728556%
D76481612.105126%

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 7813 7650 78 78 1.00% 1.02%
B 7813 7650 394 394 5.04% 5.15%
C 7813 7650 719 719 9.20% 9.40%
D 7813 7650 139 139 1.78% 1.82%

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 14 912109 4496.92 822 802 202.7
A 3 62 211394 1039.18 822 802 202.7
A 10 251 73997 361.19 822 802 202.7
B 4 206 1106054 6638.68 776 749 166.5
B 5 185 827208 4963.87 776 749 166.5
B 10 16 142973 854.22 776 749 166.5
C 15 230 1579943 7672.57 756 749 205.8
C 15 208 599417 2908.65 756 749 205.8
C 1 12 520409 2524.79 756 749 205.8
D 2 249 607424 2716.33 792 756 223.3
D 2 31 105815 470.4 792 756 223.3
D 5 222 73472 325.58 792 756 223.3

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