ASTROSAT CZTI

Data Quality Report

Orbit 15418

Creation date: 2024-06-27T17:08:15.928584
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/AS1T02_076T01_9000002274_15418cztM0_level2.evt modeM0/AS1T02_076T01_9000002274_15418cztM0_level2_quad_clean.evt
Size (bytes)665,665,920101,165,760
Size634.8 MB 96.5 MB
Events in quadrant A3,752,280659,095
Events in quadrant B3,544,707668,939
Events in quadrant C3,631,647660,235
Events in quadrant D8,759,646589,154

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158443
B0150182
C0150602
D0310032

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69761812.594610%
B6976530.759748%
C6976260.372706%
D697688712.715023%

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 7687 6978 123 123 1.60% 1.76%
B 7687 6978 12 12 0.16% 0.17%
C 7687 6978 8 8 0.10% 0.11%
D 7687 6978 923 923 12.01% 13.23%

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 14 238 378886 2246.69 825 808 168.3
A 14 237 123911 731.53 825 808 168.3
A 9 143 29749 171.98 825 808 168.3
B 0 229 37528 231.57 828 806 158.6
B 0 219 33809 208.12 828 806 158.6
B 3 209 33703 207.45 828 806 158.6
C 3 233 508666 2779.02 794 800 182.7
C 7 247 18966 99.4 794 800 182.7
C 13 61 5707 26.85 794 800 182.7
D 1 20 2808996 14950.0 765 744 187.8
D 13 122 2398770 12766.12 765 744 187.8
D 2 33 313843 1666.81 765 744 187.8

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