ASTROSAT CZTI

Data Quality Report

Orbit 03704

Creation date: 2024-06-27T14:32:37.736438
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/AS1G05_009T01_9000000482_03704cztM0_level2.evt modeM0/AS1G05_009T01_9000000482_03704cztM0_level2_quad_clean.evt
Size (bytes)545,659,20059,290,560
Size520.4 MB 56.5 MB
Events in quadrant A3,230,195346,363
Events in quadrant B6,100,088334,107
Events in quadrant C3,233,533338,752
Events in quadrant D3,523,014324,691

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135643
B0224312
C0137162
D0145992

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6468811.252319%
B6468107516.620284%
C6468681.051330%
D64681532.365492%

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 7698 6469 1 1 0.01% 0.02%
B 7698 6469 854 854 11.09% 13.20%
C 7698 6469 18 18 0.23% 0.28%
D 7698 6469 83 83 1.08% 1.28%

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 13 251 17685 99.81 829 814 169.0
A 0 226 8991 48.37 829 814 169.0
A 12 194 8635 46.27 829 814 169.0
B 5 70 2505707 16986.97 773 758 147.5
B 14 167 265688 1796.59 773 758 147.5
B 15 204 209236 1413.77 773 758 147.5
C 8 208 48448 261.35 790 796 182.3
C 9 247 24729 131.26 790 796 182.3
C 7 239 23610 125.12 790 796 182.3
D 2 37 242029 1277.32 785 762 188.9
D 1 84 97799 513.73 785 762 188.9
D 13 137 48042 250.31 785 762 188.9

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
Veto Counter