ASTROSAT CZTI

Data Quality Report

Orbit 27201

Creation date: 2024-06-27T19:37:39.144087
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/AS1T03_243T01_9000003918_27201cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27201cztM0_level2_quad_clean.evt
Size (bytes)752,616,00088,283,520
Size717.8 MB 84.2 MB
Events in quadrant A3,308,965626,945
Events in quadrant B9,954,345380,107
Events in quadrant C3,305,431606,156
Events in quadrant D5,761,699582,507

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142210
B0343460
C0141390
D0217650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6836490.716793%
B6836286641.925102%
C6836701.023991%
D68373725.440983%

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 7605 6836 0 0 0.00% 0.00%
B 7605 6832 1984 1984 26.09% 29.04%
C 7605 6836 1 1 0.01% 0.01%
D 7607 6838 360 360 4.73% 5.26%

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 13 248 30656 174.99 845 829 170.5
A 13 254 10679 57.79 845 829 170.5
A 0 13 9227 49.27 845 829 170.5
B 3 64 7314185 64000.94 595 582 114.3
B 0 189 194610 1697.93 595 582 114.3
B 0 190 52481 454.17 595 582 114.3
C 14 238 129966 676.72 809 814 190.8
C 14 225 14907 73.84 809 814 190.8
C 15 208 9851 47.35 809 814 190.8
D 1 52 1423241 7080.42 795 775 200.9
D 5 222 395418 1964.36 795 775 200.9
D 7 38 288426 1431.8 795 775 200.9

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