ASTROSAT CZTI

Data Quality Report

Orbit 51762

Creation date: 2025-04-23T22:23:41.189872
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/AS1A13_090T01_9000006464_51762cztM0_level2.fits modeM0/AS1A13_090T01_9000006464_51762cztM0_level2_quad_clean.evt
Size (bytes)837,334,08099,887,040
Size798.5 MB 95.3 MB
Events in quadrant A5,356,970736,502
Events in quadrant B5,504,275781,152
Events in quadrant C5,031,267696,786
Events in quadrant D14,482,995254,319

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0215410
B0219160
C0206180
D0485320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79871401.752848%
B79874115.145862%
C79883234.043565%
D7988527065.973961%

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 7987 7987 81 81 1.01% 1.01%
B 7987 7987 256 256 3.21% 3.21%
C 7988 7988 241 241 3.02% 3.02%
D 7987 7983 3731 3731 46.71% 46.74%

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 12 3 940418 4407.38 864 842 213.2
A 11 3 286204 1338.58 864 842 213.2
A 12 194 116377 541.95 864 842 213.2
B 4 206 1162743 6212.98 855 824 187.0
B 10 247 197163 1049.86 855 824 187.0
B 0 216 105601 560.26 855 824 187.0
C 0 209 497609 2155.95 831 825 230.4
C 15 218 481945 2087.97 831 825 230.4
C 15 192 102573 441.57 831 825 230.4
D 11 129 8536196 66496.85 460 443 128.4
D 8 176 3312889 25805.25 460 443 128.4
D 3 12 114421 887.93 460 443 128.4

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