ASTROSAT CZTI

Data Quality Report

Orbit 33171

Creation date: 2024-06-27T20:45:41.452240
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/AS1A11_080T02_9000004768_33171cztM0_level2.evt modeM0/AS1A11_080T02_9000004768_33171cztM0_level2_quad_clean.evt
Size (bytes)1,260,538,560205,974,720
Size1.2 GB 196.4 MB
Events in quadrant A6,989,3971,321,086
Events in quadrant B9,486,4211,321,148
Events in quadrant C7,476,6331,300,159
Events in quadrant D13,175,4281,224,652

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0510

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03180
C03180
D03180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0313605
B0389344
C0328544
D0501664

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15522180.115964%
B155226224.007216%
C155221060.682902%
D155226113.936348%

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 19788 15525 0 0 0.00% 0.00%
B 19788 15525 352 352 1.78% 2.27%
C 19788 15525 73 73 0.37% 0.47%
D 19788 15525 490 490 2.48% 3.16%

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 26118 67.67 1801 1767 359.8
A 13 6 20425 51.85 1801 1767 359.8
A 3 137 17041 42.45 1801 1767 359.8
B 5 172 1966169 5833.99 1766 1719 336.7
B 0 219 196828 579.43 1766 1719 336.7
B 5 200 78956 229.38 1766 1719 336.7
C 0 10 291284 722.05 1735 1748 401.0
C 1 241 204430 505.45 1735 1748 401.0
C 14 67 88350 215.97 1735 1748 401.0
D 8 195 3062876 6730.42 1708 1665 454.8
D 2 250 1099878 2414.54 1708 1665 454.8
D 10 203 938538 2059.82 1708 1665 454.8

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