ASTROSAT CZTI

Data Quality Report

Orbit 26460

Creation date: 2024-06-27T19:29:16.302474
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_056T01_9000003824_26460cztM0_level2.evt modeM0/AS1A09_056T01_9000003824_26460cztM0_level2_quad_clean.evt
Size (bytes)555,203,520105,336,000
Size529.5 MB 100.5 MB
Events in quadrant A3,238,375717,952
Events in quadrant B3,278,202737,434
Events in quadrant C3,649,351703,594
Events in quadrant D6,231,463601,333

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134960
B0135240
C0148690
D0227000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6149550.894454%
B6148631.024723%
C61481572.553676%
D6148107617.501627%

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 7529 6150 0 0 0.00% 0.00%
B 7528 6149 0 0 0.00% 0.00%
C 7528 6148 16 16 0.21% 0.26%
D 7527 6148 940 940 12.49% 15.29%

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 12 189 14614 84.22 834 822 163.8
A 13 254 10488 59.02 834 822 163.8
A 0 226 7217 39.05 834 822 163.8
B 12 111 17541 111.18 833 817 150.4
B 11 111 15402 96.96 833 817 150.4
B 0 245 14775 92.79 833 817 150.4
C 2 16 193764 1023.6 818 827 188.5
C 14 238 132348 697.77 818 827 188.5
C 3 233 124658 656.97 818 827 188.5
D 1 52 1698796 9501.74 758 738 178.7
D 7 80 957308 5352.63 758 738 178.7
D 12 233 655777 3665.37 758 738 178.7

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