ASTROSAT CZTI

Data Quality Report

Orbit 58822

Creation date: 2026-08-12T01:14:03.231810
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_106T01_9000006596_58822cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58822cztM0_level2_quad_clean.evt
Size (bytes)703,814,400109,958,400
Size671.2 MB 104.9 MB
Events in quadrant A3,708,664753,980
Events in quadrant B4,634,536796,178
Events in quadrant C5,955,751669,822
Events in quadrant D11,154,421570,110

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166290
B0192160
C0232040
D0386044

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7747480.619595%
B77481672.155395%
C77486588.492514%
D7747146618.923454%

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 7747 7747 28 28 0.36% 0.36%
B 7748 7748 87 87 1.12% 1.12%
C 7748 7748 607 607 7.83% 7.83%
D 7747 7747 1301 1301 16.79% 16.79%

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 13 248 115462 531.47 865 841 215.7
A 10 251 59472 271.86 865 841 215.7
A 2 143 48888 222.78 865 841 215.7
B 7 0 295716 1605.55 852 821 183.7
B 4 171 276937 1503.31 852 821 183.7
B 5 185 169205 916.77 852 821 183.7
C 6 223 1074619 4758.78 818 810 225.6
C 9 38 821392 3636.56 818 810 225.6
C 13 3 451109 1995.58 818 810 225.6
D 12 110 7165915 31469.78 789 754 227.7
D 2 120 491103 2153.64 789 754 227.7
D 5 32 102829 448.32 789 754 227.7

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