ASTROSAT CZTI

Data Quality Report

Orbit 26909

Creation date: 2024-06-27T19:34:20.883795
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/AS1A09_044T01_9000003888_26909cztM0_level2.evt modeM0/AS1A09_044T01_9000003888_26909cztM0_level2_quad_clean.evt
Size (bytes)591,906,24070,439,040
Size564.5 MB 67.2 MB
Events in quadrant A3,953,235423,517
Events in quadrant B4,577,551433,338
Events in quadrant C3,629,185429,123
Events in quadrant D5,333,581400,614

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156420
B0178070
C0144760
D0200200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63921121.752190%
B63922924.568210%
C63911452.268816%
D63914577.150681%

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 7787 6392 27 27 0.35% 0.42%
B 7787 6393 164 164 2.11% 2.57%
C 7786 6392 3 3 0.04% 0.05%
D 7786 6391 385 385 4.94% 6.02%

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 13 457392 2598.6 896 883 175.7
A 8 192 40833 227.41 896 883 175.7
A 13 254 10134 52.66 896 883 175.7
B 10 245 859339 5259.45 896 877 163.2
B 15 33 114573 696.57 896 877 163.2
B 0 190 62693 378.72 896 877 163.2
C 14 238 146405 720.86 883 892 201.9
C 3 233 25295 120.89 883 892 201.9
C 15 208 17604 82.79 883 892 201.9
D 1 52 1435507 7119.48 861 844 201.5
D 7 80 380102 1882.06 861 844 201.5
D 2 250 139576 688.45 861 844 201.5

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