ASTROSAT CZTI

Data Quality Report

Orbit 03767

Creation date: 2024-06-27T14:33:25.179700
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/AS1G05_248T01_9000000486_03767cztM0_level2.evt modeM0/AS1G05_248T01_9000000486_03767cztM0_level2_quad_clean.evt
Size (bytes)532,748,16087,707,520
Size508.1 MB 83.6 MB
Events in quadrant A4,420,579536,812
Events in quadrant B4,033,711544,461
Events in quadrant C3,357,792538,480
Events in quadrant D3,820,638521,894

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182402
B0168871
C0154081
D0166091

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73863064.142973%
B73861351.827782%
C7386620.839426%
D73861271.719469%

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 7591 7388 149 149 1.96% 2.02%
B 7591 7388 6 6 0.08% 0.08%
C 7591 7388 7 7 0.09% 0.09%
D 7591 7388 67 67 0.88% 0.91%

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 13 251 580287 3300.2 850 831 175.6
A 0 118 389231 2212.07 850 831 175.6
A 0 50 70206 395.11 850 831 175.6
B 15 204 462116 2727.58 866 845 169.1
B 7 252 85028 497.79 866 845 169.1
B 15 54 42982 249.16 866 845 169.1
C 9 247 56962 284.22 837 839 197.5
C 10 34 10501 48.93 837 839 197.5
C 12 4 9676 44.75 837 839 197.5
D 8 112 190072 928.31 837 810 203.9
D 3 247 123528 601.92 837 810 203.9
D 13 223 88625 430.72 837 810 203.9

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
Veto Counter