ASTROSAT CZTI

Data Quality Report

Orbit 21147

Creation date: 2024-06-27T18:24:08.324250
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/AS1T03_136T01_9000003124_21147cztM0_level2.evt modeM0/AS1T03_136T01_9000003124_21147cztM0_level2_quad_clean.evt
Size (bytes)504,728,64093,798,720
Size481.3 MB 89.5 MB
Events in quadrant A3,370,773618,544
Events in quadrant B3,320,630641,908
Events in quadrant C3,213,556605,938
Events in quadrant D4,969,647550,441

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138142
B0136312
C0132722
D0188182

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60691041.713627%
B6069570.939199%
C6069931.532378%
D60693595.915307%

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 7449 6070 53 53 0.71% 0.87%
B 7449 6070 1 1 0.01% 0.02%
C 7449 6070 16 16 0.21% 0.26%
D 7449 6070 364 364 4.89% 6.00%

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 15 236 276578 1729.6 799 785 159.5
A 13 254 9356 53.75 799 785 159.5
A 15 192 9086 52.06 799 785 159.5
B 0 189 40995 265.57 809 791 151.4
B 0 230 36922 238.67 809 791 151.4
B 12 111 16873 106.23 809 791 151.4
C 14 238 123157 693.94 761 767 176.4
C 0 10 65328 366.05 761 767 176.4
C 3 233 51168 285.77 761 767 176.4
D 7 238 1056479 5772.34 746 727 182.9
D 1 52 349463 1906.72 746 727 182.9
D 9 65 252379 1375.91 746 727 182.9

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