ASTROSAT CZTI

Data Quality Report

Orbit 16673

Creation date: 2024-06-27T17:25:58.496031
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/AS1A05_078T01_9000002462_16673cztM0_level2.evt modeM0/AS1A05_078T01_9000002462_16673cztM0_level2_quad_clean.evt
Size (bytes)497,485,440125,536,320
Size474.4 MB 119.7 MB
Events in quadrant A3,295,069873,930
Events in quadrant B3,456,702887,065
Events in quadrant C3,649,732835,000
Events in quadrant D4,265,235794,514

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138232
B0140811
C0148291
D0166441

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58901342.275042%
B58901031.748727%
C58901091.850594%
D58904918.336163%

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 7176 5892 51 51 0.71% 0.87%
B 7176 5892 22 22 0.31% 0.37%
C 7176 5892 1 1 0.01% 0.02%
D 7176 5892 363 363 5.06% 6.16%

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 15 174 300663 1984.08 758 746 151.2
A 9 143 63200 413.16 758 746 151.2
A 12 96 8338 50.22 758 746 151.2
B 7 220 174330 1248.9 758 743 139.0
B 15 35 127529 912.18 758 743 139.0
B 0 229 103071 736.22 758 743 139.0
C 3 233 725766 4444.35 713 718 163.1
C 14 238 113121 689.0 713 718 163.1
C 5 237 24355 144.89 713 718 163.1
D 2 16 971484 5744.59 707 687 169.0
D 1 52 280771 1657.37 707 687 169.0
D 15 0 121090 712.47 707 687 169.0

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