ASTROSAT CZTI

Data Quality Report

Orbit 17312

Creation date: 2024-06-27T17:34:51.459909
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_010T02_9000002556_17312cztM0_level2.evt modeM0/AS1A05_010T02_9000002556_17312cztM0_level2_quad_clean.evt
Size (bytes)438,076,800102,755,520
Size417.8 MB 98.0 MB
Events in quadrant A3,121,557690,275
Events in quadrant B3,145,729698,006
Events in quadrant C3,060,844642,209
Events in quadrant D3,507,525638,582

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133331
B0133312
C0131851
D0147141

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6352821.290932%
B6352871.369647%
C6352761.196474%
D63521071.684509%

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 7627 6353 0 0 0.00% 0.00%
B 7627 6353 1 1 0.01% 0.02%
C 7627 6353 0 0 0.00% 0.00%
D 7627 6353 41 41 0.54% 0.65%

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 23 25435 152.52 806 792 161.6
A 0 226 8435 47.3 806 792 161.6
A 3 137 5938 31.85 806 792 161.6
B 12 111 18010 114.39 802 785 150.6
B 11 111 15555 98.09 802 785 150.6
B 14 111 13538 84.69 802 785 150.6
C 14 238 117932 674.45 750 756 173.7
C 3 233 17086 93.99 750 756 173.7
C 13 61 5301 26.16 750 756 173.7
D 11 176 297688 1611.06 760 740 184.3
D 5 222 202073 1092.31 760 740 184.3
D 1 52 94008 506.01 760 740 184.3

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