ASTROSAT CZTI

Data Quality Report

Orbit 16223

Creation date: 2024-06-27T17:19:34.537664
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/AS1T02_112T01_9000002390_16223cztM0_level2.evt modeM0/AS1T02_112T01_9000002390_16223cztM0_level2_quad_clean.evt
Size (bytes)451,344,96069,016,320
Size430.4 MB 65.8 MB
Events in quadrant A3,335,823418,161
Events in quadrant B3,309,839424,939
Events in quadrant C3,122,881417,026
Events in quadrant D3,487,631405,008

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136512
B0135171
C0129431
D0143211

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6078450.740375%
B6078731.201053%
C6078791.299770%
D60781001.645278%

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 7264 6080 0 0 0.00% 0.00%
B 7264 6080 14 14 0.19% 0.23%
C 7264 6080 0 0 0.00% 0.00%
D 7264 6080 73 73 1.00% 1.20%

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 0 253 202752 1284.59 787 774 157.2
A 8 247 83924 528.84 787 774 157.2
A 15 239 9583 56.03 787 774 157.2
B 0 219 74566 497.78 788 769 148.3
B 0 198 51334 341.08 788 769 148.3
B 0 189 51089 339.42 788 769 148.3
C 14 238 118281 673.23 757 764 174.6
C 7 247 28226 157.32 757 764 174.6
C 3 233 26868 149.54 757 764 174.6
D 15 0 470896 2561.77 763 744 183.5
D 13 112 118173 639.85 763 744 183.5
D 2 234 21666 114.0 763 744 183.5

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