ASTROSAT CZTI

Data Quality Report

Orbit 08934

Creation date: 2024-06-27T15:39:10.563329
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/AS1A03_092T01_9000001240_08934cztM0_level2.evt modeM0/AS1A03_092T01_9000001240_08934cztM0_level2_quad_clean.evt
Size (bytes)569,646,720104,094,720
Size543.3 MB 99.3 MB
Events in quadrant A5,710,421647,004
Events in quadrant B3,680,135676,451
Events in quadrant C3,345,419662,970
Events in quadrant D4,006,741643,405

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221123
B0158832
C0154192
D0170152

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75085196.912627%
B7508680.905701%
C7508150.199787%
D7508891.185402%

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 7903 7509 402 402 5.09% 5.35%
B 7903 7509 2 2 0.03% 0.03%
C 7903 7509 0 0 0.00% 0.00%
D 7903 7509 69 69 0.87% 0.92%

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 0 128 1701041 9439.74 879 861 180.1
A 8 5 558099 3093.9 879 861 180.1
A 5 16 43451 236.47 879 861 180.1
B 0 214 45696 260.86 894 872 171.8
B 10 252 33495 189.85 894 872 171.8
B 0 231 24926 139.98 894 872 171.8
C 13 61 6614 29.09 855 860 197.8
C 14 234 4982 20.84 855 860 197.8
C 5 128 3222 11.94 855 860 197.8
D 13 104 408831 1771.75 853 832 230.3
D 8 195 122900 530.08 853 832 230.3
D 1 52 63075 270.29 853 832 230.3

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