ASTROSAT CZTI

Data Quality Report

Orbit 09151

Creation date: 2024-06-27T15:41:59.715011
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/AS1C02_042T01_9000001278_09151cztM0_level2.evt modeM0/AS1C02_042T01_9000001278_09151cztM0_level2_quad_clean.evt
Size (bytes)557,438,400103,996,800
Size531.6 MB 99.2 MB
Events in quadrant A5,024,596643,738
Events in quadrant B3,801,589661,177
Events in quadrant C3,660,802652,207
Events in quadrant D3,844,967629,008

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0201383
B0167982
C0167942
D0172892

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81083524.341391%
B81083163.897385%
C81082092.577701%
D81082392.947706%

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 9163 8108 27 27 0.29% 0.33%
B 9163 8108 0 0 0.00% 0.00%
C 9163 8108 0 0 0.00% 0.00%
D 9163 8108 17 17 0.19% 0.21%

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 1203067 6185.99 947 923 194.3
A 5 16 84616 430.67 947 923 194.3
A 1 162 49050 247.65 947 923 194.3
B 0 219 41173 219.93 956 932 183.0
B 12 111 20341 106.08 956 932 183.0
B 11 111 16590 85.58 956 932 183.0
C 9 68 27050 122.25 926 925 213.7
C 13 61 6877 27.85 926 925 213.7
C 8 128 6404 25.64 926 925 213.7
D 1 52 139619 581.77 916 887 238.5
D 2 14 109871 457.02 916 887 238.5
D 7 71 45169 185.69 916 887 238.5

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