ASTROSAT CZTI

Data Quality Report

Orbit 55292

Creation date: 2025-12-17T14:17:04.791406
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_009T01_9000006534_55292cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55292cztM0_level2_quad_clean.evt
Size (bytes)530,844,480124,891,200
Size506.3 MB 119.1 MB
Events in quadrant A4,666,615798,064
Events in quadrant B4,730,343855,418
Events in quadrant C4,600,068775,543
Events in quadrant D4,965,421738,417

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205441
B0207680
C0202620
D0210650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A88502052.316384%
B88502863.231638%
C88502232.519774%
D8851991.118518%

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 8850 8850 137 137 1.55% 1.55%
B 8850 8850 153 153 1.73% 1.73%
C 8850 8850 160 160 1.81% 1.81%
D 8851 8851 105 105 1.19% 1.19%

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 0 8 791086 3450.07 931 907 229.0
A 7 7 120394 521.7 931 907 229.0
A 7 243 41723 178.21 931 907 229.0
B 0 199 292380 1457.54 927 890 200.0
B 5 185 222788 1109.55 927 890 200.0
B 10 245 192626 958.74 927 890 200.0
C 13 3 412552 1652.84 918 909 249.1
C 12 249 401902 1610.08 918 909 249.1
C 12 252 94221 374.67 918 909 249.1
D 11 129 317308 1254.25 910 870 252.3
D 6 239 208902 824.56 910 870 252.3
D 3 12 192074 757.86 910 870 252.3

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