ASTROSAT CZTI

Data Quality Report

Orbit 21969

Creation date: 2024-06-27T18:34:40.370518
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/AS1A07_130T01_9000003246_21969cztM0_level2.evt modeM0/AS1A07_130T01_9000003246_21969cztM0_level2_quad_clean.evt
Size (bytes)462,758,40068,590,080
Size441.3 MB 65.4 MB
Events in quadrant A3,272,949409,030
Events in quadrant B3,432,275417,830
Events in quadrant C3,258,024399,998
Events in quadrant D3,607,512394,175

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137712
B0141872
C0136222
D0148912

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6536570.872093%
B6536871.331089%
C6536781.193390%
D65361041.591187%

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 7671 6536 1 1 0.01% 0.02%
B 7671 6536 13 13 0.17% 0.20%
C 7671 6536 0 0 0.00% 0.00%
D 7671 6536 64 64 0.83% 0.98%

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 11142 61.22 844 830 168.4
A 5 242 8899 47.91 844 830 168.4
A 0 226 7263 38.19 844 830 168.4
B 3 64 103791 653.25 837 817 157.6
B 12 111 19389 117.82 837 817 157.6
B 11 111 17427 105.37 837 817 157.6
C 14 238 127778 685.77 799 807 185.2
C 10 91 11981 60.35 799 807 185.2
C 13 61 5679 26.31 799 807 185.2
D 13 174 280423 1411.98 813 790 198.0
D 2 136 141390 709.94 813 790 198.0
D 1 52 28907 141.97 813 790 198.0

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