ASTROSAT CZTI

Data Quality Report

Orbit 25666

Creation date: 2024-06-27T19:20:11.278399
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/AS1A09_016T03_9000003740_25666cztM0_level2.evt modeM0/AS1A09_016T03_9000003740_25666cztM0_level2_quad_clean.evt
Size (bytes)465,701,76072,342,720
Size444.1 MB 69.0 MB
Events in quadrant A3,375,563445,972
Events in quadrant B3,325,344455,665
Events in quadrant C3,275,463425,176
Events in quadrant D3,689,622413,775

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135850
B0134930
C0133980
D0150070

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6445490.760279%
B6444741.148355%
C6444771.194910%
D6444240.372439%

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 7440 6446 1 1 0.01% 0.02%
B 7439 6445 1 1 0.01% 0.02%
C 7439 6445 0 0 0.00% 0.00%
D 7439 6445 5 5 0.07% 0.08%

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 8 192 113496 668.27 841 826 168.6
A 12 96 9479 51.32 841 826 168.6
A 6 16 8901 47.89 841 826 168.6
B 12 111 19593 116.8 841 820 160.7
B 11 111 17569 104.21 841 820 160.7
B 14 111 16159 95.44 841 820 160.7
C 14 238 129831 685.19 803 810 188.3
C 3 233 16087 81.13 803 810 188.3
C 13 61 5501 24.91 803 810 188.3
D 8 195 428604 2149.38 805 782 199.0
D 1 52 188298 942.08 805 782 199.0
D 13 104 30345 148.52 805 782 199.0

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