ASTROSAT CZTI

Data Quality Report

Orbit 03888

Creation date: 2024-06-27T14:34:49.490588
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/AS1G05_239T02_9000000496_03888cztM0_level2.evt modeM0/AS1G05_239T02_9000000496_03888cztM0_level2_quad_clean.evt
Size (bytes)620,182,08074,548,800
Size591.5 MB 71.1 MB
Events in quadrant A5,479,284432,908
Events in quadrant B3,451,546463,890
Events in quadrant C5,952,147441,853
Events in quadrant D3,440,004445,105

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208713
B0149542
C0224922
D0152972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A678870310.356511%
B6788290.427225%
C67882994.404832%
D6788881.296405%

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 7733 6788 532 532 6.88% 7.84%
B 7733 6788 1 1 0.01% 0.01%
C 7733 6788 322 322 4.16% 4.74%
D 7733 6789 99 99 1.28% 1.46%

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 0 199 1769384 11526.11 732 715 153.4
A 8 15 420760 2737.36 732 715 153.4
A 0 118 212055 1377.27 732 715 153.4
B 15 204 359371 2369.83 771 753 151.3
B 4 48 25123 161.04 771 753 151.3
B 0 183 22919 146.48 771 753 151.3
C 2 53 3079456 18001.65 729 733 171.0
C 14 67 20035 112.86 729 733 171.0
C 13 61 6180 31.85 729 733 171.0
D 9 82 414012 2291.97 733 712 180.3
D 13 248 91896 505.66 733 712 180.3
D 13 223 20708 110.89 733 712 180.3

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
Veto Counter