ASTROSAT CZTI

Data Quality Report

Orbit 10737

Creation date: 2024-06-27T16:03:06.252350
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/AS1A03_078T01_9000001546_10737cztM0_level2.evt modeM0/AS1A03_078T01_9000001546_10737cztM0_level2_quad_clean.evt
Size (bytes)581,086,08063,414,720
Size554.2 MB 60.5 MB
Events in quadrant A5,597,302369,914
Events in quadrant B4,033,857376,499
Events in quadrant C3,193,326375,017
Events in quadrant D4,337,222348,625

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0209633
B0162932
C0137522
D0172432

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64424547.047501%
B64422253.492704%
C6442791.226327%
D64423064.750078%

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 7572 6442 190 190 2.51% 2.95%
B 7572 6442 78 78 1.03% 1.21%
C 7572 6442 5 5 0.07% 0.08%
D 7572 6442 227 227 3.00% 3.52%

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 15 239 2337140 14081.96 814 794 165.9
A 15 174 62885 374.24 814 794 165.9
A 14 254 32630 191.89 814 794 165.9
B 4 239 569407 3610.67 818 800 157.5
B 0 219 129723 818.66 818 800 157.5
B 0 214 68317 428.73 818 800 157.5
C 14 234 66866 354.91 802 805 186.1
C 13 61 6004 27.93 802 805 186.1
C 3 202 2031 6.59 802 805 186.1
D 2 16 781218 4134.82 788 767 188.8
D 10 172 116278 611.98 788 767 188.8
D 1 52 110319 580.4 788 767 188.8

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