ASTROSAT CZTI

Data Quality Report

Orbit 09225

Creation date: 2024-06-27T15:42:56.249788
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/AS1A02_178T01_9000001286_09225cztM0_level2.evt modeM0/AS1A02_178T01_9000001286_09225cztM0_level2_quad_clean.evt
Size (bytes)517,392,00077,855,040
Size493.4 MB 74.2 MB
Events in quadrant A4,797,387461,421
Events in quadrant B3,568,663478,037
Events in quadrant C3,373,028464,111
Events in quadrant D3,441,493454,062

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016424
B016416
C016410
D016418

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0211842237
B0166481335
C0164111353
D0168841623

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70454035.720369%
B72483214.428808%
C72282663.680133%
D71762773.860089%

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 8143 7671 31 31 0.38% 0.40%
B 8143 7756 0 0 0.00% 0.00%
C 8143 7731 0 0 0.00% 0.00%
D 8142 7717 7 7 0.09% 0.09%

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 5 1275795 7282.91 853 833 175.1
A 5 16 77192 436.18 853 833 175.1
A 1 162 63648 358.82 853 833 175.1
B 0 214 43656 246.6 886 863 173.5
B 0 245 35314 198.53 886 863 173.5
B 12 111 18957 104.27 886 863 173.5
C 13 61 6660 28.93 861 862 200.4
C 14 67 5536 23.33 861 862 200.4
C 8 222 4223 16.77 861 862 200.4
D 7 71 70687 308.16 847 822 226.7
D 12 233 44361 192.04 847 822 226.7
D 5 97 36231 156.18 847 822 226.7

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