ASTROSAT CZTI

Data Quality Report

Orbit 31101

Creation date: 2024-06-27T20:23:22.695527
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/AS1A10_109T01_9000004492_31101cztM0_level2.evt modeM0/AS1A10_109T01_9000004492_31101cztM0_level2_quad_clean.evt
Size (bytes)571,547,52088,787,520
Size545.1 MB 84.7 MB
Events in quadrant A3,482,744561,762
Events in quadrant B5,487,807557,416
Events in quadrant C3,790,451536,375
Events in quadrant D4,060,940532,252

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147343
B0216812
C0155262
D0165522

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7198991.375382%
B71991672.319767%
C71992032.819836%
D71991301.805806%

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 8653 7200 0 0 0.00% 0.00%
B 8654 7201 1 1 0.01% 0.01%
C 8654 7201 19 19 0.22% 0.26%
D 8654 7201 25 25 0.29% 0.35%

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 13 254 10847 55.13 901 884 180.7
A 3 137 9674 48.64 901 884 180.7
A 0 226 7474 36.46 901 884 180.7
B 6 159 1933298 11289.53 884 863 171.2
B 0 183 41096 235.05 884 863 171.2
B 0 190 22673 127.42 884 863 171.2
C 0 10 226285 1114.19 855 861 202.3
C 14 238 136481 670.32 855 861 202.3
C 10 22 51579 250.68 855 861 202.3
D 13 174 421120 2031.51 866 844 206.9
D 8 195 355034 1712.07 866 844 206.9
D 2 234 28899 135.61 866 844 206.9

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