ASTROSAT CZTI

Data Quality Report

Orbit 28089

Creation date: 2024-06-27T19:47:55.300606
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/AS1A10_073T01_9000004056_28089cztM0_level2.evt modeM0/AS1A10_073T01_9000004056_28089cztM0_level2_quad_clean.evt
Size (bytes)568,811,520124,367,040
Size542.5 MB 118.6 MB
Events in quadrant A3,266,867869,900
Events in quadrant B3,172,881858,529
Events in quadrant C4,333,215808,879
Events in quadrant D5,999,705762,330

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140810
B0138750
C0172800
D0225650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6686901.346096%
B6687570.852400%
C66873124.665769%
D668787313.055182%

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 7231 6687 49 49 0.68% 0.73%
B 7232 6688 2 2 0.03% 0.03%
C 7232 6688 44 44 0.61% 0.66%
D 7232 6687 653 653 9.03% 9.77%

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 13 170 136630 837.81 801 783 162.1
A 0 13 26380 157.86 801 783 162.1
A 12 96 11155 63.97 801 783 162.1
B 15 32 21941 140.41 791 770 150.8
B 4 200 20649 131.84 791 770 150.8
B 12 111 18578 118.11 791 770 150.8
C 3 233 1258391 7057.37 758 760 178.2
C 14 238 121904 679.82 758 760 178.2
C 13 61 5281 25.37 758 760 178.2
D 12 1 1668166 9498.61 727 707 175.5
D 8 195 674305 3837.12 727 707 175.5
D 1 52 342253 1945.6 727 707 175.5

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