ASTROSAT CZTI

Data Quality Report

Orbit 20549

Creation date: 2024-06-27T18:16:44.564092
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_069T02_9000003038_20549cztM0_level2.evt modeM0/AS1A05_069T02_9000003038_20549cztM0_level2_quad_clean.evt
Size (bytes)471,245,76071,297,280
Size449.4 MB 68.0 MB
Events in quadrant A3,600,054430,478
Events in quadrant B3,406,434436,557
Events in quadrant C3,341,165411,901
Events in quadrant D3,463,430407,634

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149942
B0143142
C0141002
D0146182

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67721412.082103%
B67731331.963679%
C67731552.288498%
D67731251.845563%

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 8577 6774 6 6 0.07% 0.09%
B 8578 6775 0 0 0.00% 0.00%
C 8578 6775 0 0 0.00% 0.00%
D 8578 6775 22 22 0.26% 0.32%

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 253196 1449.36 866 848 174.1
A 14 111 9374 48.97 866 848 174.1
A 0 226 7361 37.41 866 848 174.1
B 12 111 20610 119.38 860 839 165.6
B 0 230 20210 116.97 860 839 165.6
B 11 111 18273 105.27 860 839 165.6
C 14 238 127578 657.44 822 825 192.8
C 8 208 8914 41.96 822 825 192.8
C 13 61 5794 25.77 822 825 192.8
D 1 52 207290 1012.66 839 815 203.9
D 10 199 30616 146.16 839 815 203.9
D 7 238 24995 118.59 839 815 203.9

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