ASTROSAT CZTI

Data Quality Report

Orbit 19920

Creation date: 2024-06-27T18:08:47.949467
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_064T01_9000002964_19920cztM0_level2.evt modeM0/AS1A05_064T01_9000002964_19920cztM0_level2_quad_clean.evt
Size (bytes)726,534,720111,818,880
Size692.9 MB 106.6 MB
Events in quadrant A3,836,467754,521
Events in quadrant B3,806,989777,559
Events in quadrant C5,942,789731,201
Events in quadrant D7,947,431638,463

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163922
B0159712
C0224212
D0285202

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69412323.342458%
B69411061.527157%
C69416589.479902%
D6941174825.183691%

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 7566 6942 158 158 2.09% 2.28%
B 7566 6941 20 20 0.26% 0.29%
C 7566 6941 291 291 3.85% 4.19%
D 7566 6941 1563 1563 20.66% 22.52%

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 14 238 781612 4872.33 792 773 160.3
A 0 226 6910 38.29 792 773 160.3
A 3 137 6075 33.08 792 773 160.3
B 3 112 262631 1717.1 806 785 152.5
B 7 220 191646 1251.6 806 785 152.5
B 0 197 58159 376.24 806 785 152.5
C 9 221 2399774 13469.99 764 769 178.1
C 4 254 262169 1467.71 764 769 178.1
C 3 233 175145 979.09 764 769 178.1
D 12 218 2128389 12370.81 706 684 172.0
D 7 38 1908163 11090.39 706 684 172.0
D 7 238 511356 2969.13 706 684 172.0

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