ASTROSAT CZTI

Data Quality Report

Orbit 23233

Creation date: 2024-06-27T18:51:38.766988
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/AS1A08_009T01_9000003434_23233cztM0_level2.evt modeM0/AS1A08_009T01_9000003434_23233cztM0_level2_quad_clean.evt
Size (bytes)463,377,600113,051,520
Size441.9 MB 107.8 MB
Events in quadrant A2,938,542758,388
Events in quadrant B3,079,163777,469
Events in quadrant C3,135,973754,382
Events in quadrant D4,478,109720,538

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124711
B0128581
C0130061
D0175061

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5908450.761679%
B5909681.150787%
C59091392.352344%
D59092374.010831%

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 7223 5909 2 2 0.03% 0.03%
B 7224 5910 8 8 0.11% 0.14%
C 7224 5910 23 23 0.32% 0.39%
D 7224 5909 170 170 2.35% 2.88%

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 6 16 10929 67.43 758 744 151.0
A 13 254 9876 60.46 758 744 151.0
A 0 226 6496 38.08 758 744 151.0
B 5 172 51516 358.71 762 744 141.5
B 0 190 25514 175.0 762 744 141.5
B 6 36 18190 123.26 762 744 141.5
C 14 238 120257 696.22 743 748 171.7
C 0 10 106598 616.65 743 748 171.7
C 10 9 6162 31.54 743 748 171.7
D 1 52 421963 2378.4 743 723 177.1
D 7 238 376877 2123.84 743 723 177.1
D 2 152 372001 2096.31 743 723 177.1

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