ASTROSAT CZTI

Data Quality Report

Orbit 20200521_A07_091T03_9000003678_level2

Creation date: 2021-01-11T07:05:33.544475
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A07_091T03_9000003678cztM0_level2_bc.evt modeM0/AS1A07_091T03_9000003678cztM0_level2_quad_clean.evt
Size (bytes)1,350,380,160444,600,000
Size1.3 GB 424.0 MB
Events in quadrant A6,978,1612,850,307
Events in quadrant B7,287,9892,883,189
Events in quadrant C8,973,8812,758,006
Events in quadrant D15,334,4422,637,226

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0704300
B0716080
C0767620
D0986250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06960
B06960
C06960
D06960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A340093230.949749%
B340104801.411350%
C340106271.843575%
D3401025247.421347%

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 38315 34010 0 0 0.00% 0.00%
B 38316 34011 5 5 0.01% 0.01%
C 38316 34009 8 8 0.02% 0.02%
D 38316 34011 703 703 1.83% 2.07%

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 15 174 88978 226.6 1779 1746 385.0
A 13 254 49856 124.98 1779 1746 385.0
A 0 226 11153 24.44 1779 1746 385.0
B 10 246 147380 426.08 1791 1745 341.8
B 3 64 87484 250.85 1791 1745 341.8
B 0 190 66189 188.54 1791 1745 341.8
C 7 247 2216978 5429.81 1719 1708 408.0
C 9 54 65346 155.98 1719 1708 408.0
C 3 233 41312 97.07 1719 1708 408.0
D 1 52 6275194 15570.88 1708 1647 402.9
D 8 195 1493520 3702.81 1708 1647 402.9
D 2 244 407181 1006.53 1708 1647 402.9

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