ASTROSAT CZTI

Data Quality Report

Orbit 08297

Creation date: 2024-06-27T15:30:45.064865
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/AS1T01_163T01_9000001152_08297cztM0_level2.evt modeM0/AS1T01_163T01_9000001152_08297cztM0_level2_quad_clean.evt
Size (bytes)485,136,00088,329,600
Size462.7 MB 84.2 MB
Events in quadrant A3,908,751552,796
Events in quadrant B3,403,739559,734
Events in quadrant C3,154,151552,670
Events in quadrant D3,761,671533,484

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163843
B0146952
C0142792
D0159402

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68191832.683678%
B68191762.581024%
C6819620.909224%
D68191291.891773%

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 7044 6822 7 7 0.10% 0.10%
B 7044 6821 6 6 0.09% 0.09%
C 7044 6822 2 2 0.03% 0.03%
D 7044 6821 46 46 0.65% 0.67%

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 23 659965 3882.78 827 809 169.8
A 0 226 53164 308.4 827 809 169.8
A 13 248 16131 90.25 827 809 169.8
B 0 214 90720 557.22 827 807 161.4
B 10 16 50750 309.51 827 807 161.4
B 12 111 16949 100.04 827 807 161.4
C 9 54 38369 200.0 799 804 187.8
C 13 61 6193 28.69 799 804 187.8
C 3 202 1960 6.15 799 804 187.8
D 1 52 522625 2634.98 802 778 198.0
D 2 14 66781 333.27 802 778 198.0
D 12 221 62045 309.36 802 778 198.0

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