ASTROSAT CZTI

Data Quality Report

Orbit 20220803_T05_046T01_9000005266_level2

Creation date: 2026-01-03T23:40:12.535796
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_046T01_9000005266cztM0_level2.fits modeM0/AS1T05_046T01_9000005266cztM0_level2_quad_clean.evt
Size (bytes)381,214,080242,452,800
Size363.6 MB 231.2 MB
Events in quadrant A2,378,9881,233,145
Events in quadrant B2,213,5221,191,399
Events in quadrant C2,256,1221,143,863
Events in quadrant D1,965,9541,042,184

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0835010
B01017250
C0972140
D01093930

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08100
B08120
C08120
D08120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01610
B01610
C01610
D01610

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A39766760.191118%
B3976015573.915996%
C397528642.173476%
D3974715653.937404%

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 61387 39800 0 0 0.00% 0.00%
B 61387 39787 0 0 0.00% 0.00%
C 61387 39761 0 0 0.00% 0.00%
D 61387 39780 0 0 0.00% 0.00%

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 9 19 1936 8.75 622 585 154.4
A 7 110 1915 8.61 622 585 154.4
A 0 29 1876 8.36 622 585 154.4
B 2 9 1934 11.75 587 562 116.8
B 3 80 1701 9.75 587 562 116.8
B 2 8 1583 8.74 587 562 116.8
C 1 81 1921 8.87 596 563 153.2
C 3 203 1798 8.06 596 563 153.2
C 3 202 1773 7.9 596 563 153.2
D 6 62 1477 6.35 562 514 151.7
D 4 160 1439 6.1 562 514 151.7
D 10 113 1419 5.97 562 514 151.7

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