ASTROSAT CZTI

Data Quality Report

Orbit 20200219_A07_091T10_9000003520_level2

Creation date: 2020-02-20T12:47:41.578697
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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_091T10_9000003520cztM0_level2_bc.evt modeM0/AS1A07_091T10_9000003520cztM0_level2_quad_clean.evt
Size (bytes)618,612,480209,839,680
Size590.0 MB 200.1 MB
Events in quadrant A3,019,9451,372,123
Events in quadrant B4,024,1071,391,090
Events in quadrant C3,286,9341,366,221
Events in quadrant D7,494,1021,309,104

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0287130
B0323310
C0301660
D0442180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02720
B02720
C02720
D02720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A132781351.016719%
B132784233.185721%
C132782992.251845%
D132786895.189034%

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 16908 13275 0 0 0.00% 0.00%
B 16908 13275 96 96 0.57% 0.72%
C 16908 13275 6 6 0.04% 0.05%
D 16908 13275 71 71 0.42% 0.53%

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 13 254 20734 119.35 781 768 167.3
A 0 226 5137 26.12 781 768 167.3
A 12 194 4860 24.46 781 768 167.3
B 3 64 601719 4065.57 792 774 147.8
B 10 247 242531 1635.56 792 774 147.8
B 0 229 77282 517.6 792 774 147.8
C 7 247 290519 1613.27 771 772 179.6
C 0 10 25011 134.96 771 772 179.6
C 10 91 7518 37.56 771 772 179.6
D 1 52 2114495 12299.87 760 736 171.9
D 8 195 1090603 6341.89 760 736 171.9
D 7 238 839696 4881.87 760 736 171.9

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter