ASTROSAT CZTI

Data Quality Report

Orbit 18228

Creation date: 2024-06-27T17:47:04.360900
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/AS1C04_001T01_9000002716_18228cztM0_level2.evt modeM0/AS1C04_001T01_9000002716_18228cztM0_level2_quad_clean.evt
Size (bytes)510,396,480122,639,040
Size486.8 MB 117.0 MB
Events in quadrant A3,747,860819,387
Events in quadrant B3,310,815844,802
Events in quadrant C3,092,619800,858
Events in quadrant D4,848,117779,138

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157641
B0143661
C0137161
D0190111

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67393555.267844%
B67401161.721068%
C6740981.454006%
D67402443.620178%

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 6919 6739 225 225 3.25% 3.34%
B 6920 6740 25 25 0.36% 0.37%
C 6920 6741 0 0 0.00% 0.00%
D 6920 6740 161 161 2.33% 2.39%

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 15 174 766906 4908.37 773 756 156.1
A 11 29 7625 44.01 773 756 156.1
A 0 226 6725 38.24 773 756 156.1
B 7 220 128275 857.45 785 764 148.7
B 4 171 64555 428.96 785 764 148.7
B 12 111 17430 112.07 785 764 148.7
C 14 238 115106 645.31 753 754 177.2
C 3 233 19502 105.8 753 754 177.2
C 7 174 17868 96.58 753 754 177.2
D 5 222 1011655 5441.71 758 734 185.8
D 7 238 408786 2196.51 758 734 185.8
D 1 52 268688 1442.38 758 734 185.8

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