ASTROSAT CZTI

Data Quality Report

Orbit 20240822_C09_009T01_9000006406_level2

Creation date: 2024-08-26T15:16:00.117698
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/AS1C09_009T01_9000006406cztM0_level2.fits modeM0/AS1C09_009T01_9000006406cztM0_level2_quad_clean.evt
Size (bytes)827,735,040884,376,000
Size789.4 MB 843.4 MB
Events in quadrant A5,879,7186,737,706
Events in quadrant B332,198803
Events in quadrant C6,058,0586,644,500
Events in quadrant D5,035,4005,698,947

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022900
B022900
C022900
D022900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04437990
B01213750
C02415540
D03115890

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11233953744.783735%
B11234111233399.992879%
C11234016911.505252%
D11233983177.403484%

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 128210 112339 0 0 0.00% 0.00%
B 128207 49250 0 0 0.00% 0.00%
C 128211 112332 0 0 0.00% 0.00%
D 128211 112062 0 0 0.00% 0.00%

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 14 188 6591 13.16 1530 1426 392.5
A 14 204 5355 10.01 1530 1426 392.5
A 7 110 4921 8.91 1530 1426 392.5
B 2 9 299 9.47 89 86 22.5
B 5 232 264 7.91 89 86 22.5
B 3 17 258 7.64 89 86 22.5
C 1 81 4917 8.26 1604 1488 415.3
C 3 202 4678 7.68 1604 1488 415.3
C 1 80 4652 7.62 1604 1488 415.3
D 10 189 3652 5.82 1447 1310 402.2
D 15 63 3587 5.66 1447 1310 402.2
D 10 113 3579 5.64 1447 1310 402.2

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