ASTROSAT CZTI

Data Quality Report

Orbit 22973

Creation date: 2024-06-27T18:48:11.944775
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/AS1A07_062T01_9000003392_22973cztM0_level2.evt modeM0/AS1A07_062T01_9000003392_22973cztM0_level2_quad_clean.evt
Size (bytes)464,348,16069,690,240
Size442.8 MB 66.5 MB
Events in quadrant A3,210,534426,205
Events in quadrant B3,272,963429,855
Events in quadrant C3,386,421403,107
Events in quadrant D3,750,580396,783

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134772
B0135742
C0139332
D0155022

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6513190.291724%
B6512320.491400%
C65121372.103808%
D6512921.412776%

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 7683 6514 0 0 0.00% 0.00%
B 7682 6513 0 0 0.00% 0.00%
C 7682 6513 17 17 0.22% 0.26%
D 7682 6513 67 67 0.87% 1.03%

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 21431 126.06 827 811 163.6
A 13 254 10494 59.2 827 811 163.6
A 0 226 7131 38.64 827 811 163.6
B 12 111 18656 114.85 826 806 155.4
B 0 189 17735 108.92 826 806 155.4
B 11 111 16474 100.81 826 806 155.4
C 0 10 182974 999.45 783 790 182.3
C 14 238 124673 679.62 783 790 182.3
C 0 239 23273 123.34 783 790 182.3
D 13 172 289049 1510.85 791 769 190.8
D 1 52 149033 777.04 791 769 190.8
D 8 195 93958 488.4 791 769 190.8

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