ASTROSAT CZTI

Data Quality Report

Orbit 23005

Creation date: 2024-06-27T18:48:36.960856
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/AS1A08_004T03_9000003400_23005cztM0_level2.evt modeM0/AS1A08_004T03_9000003400_23005cztM0_level2_quad_clean.evt
Size (bytes)486,578,88092,404,800
Size464.0 MB 88.1 MB
Events in quadrant A3,259,364588,898
Events in quadrant B3,342,325599,815
Events in quadrant C3,390,981572,589
Events in quadrant D4,272,604554,287

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142211
B0143601
C0145231
D0170461

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69251231.776173%
B69241652.383016%
C69251281.848375%
D69252223.205776%

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 7100 6926 0 0 0.00% 0.00%
B 7099 6925 1 1 0.01% 0.01%
C 7100 6926 6 6 0.08% 0.09%
D 7100 6926 131 131 1.85% 1.89%

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 13 254 10323 55.58 845 825 170.9
A 3 137 7782 40.71 845 825 170.9
A 0 226 7073 36.56 845 825 170.9
B 12 111 20282 118.94 839 818 163.7
B 0 189 18894 110.45 839 818 163.7
B 11 111 18298 106.81 839 818 163.7
C 14 238 126912 667.6 805 810 188.9
C 7 247 81628 427.86 805 810 188.9
C 10 223 17776 89.82 805 810 188.9
D 1 52 626528 3136.96 816 791 199.5
D 12 227 306481 1532.49 816 791 199.5
D 13 153 92300 458.76 816 791 199.5

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