ASTROSAT CZTI

Data Quality Report

Orbit 46957

Creation date: 2024-06-27T23:29:56.183202
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/AS1A13_070T06_9000006288_46957cztM0_level2.fits modeM0/AS1A13_070T06_9000006288_46957cztM0_level2_quad_clean.evt
Size (bytes)639,936,000124,801,920
Size610.3 MB 119.0 MB
Events in quadrant A7,520,345828,866
Events in quadrant B7,304,110789,126
Events in quadrant C3,665,651855,034
Events in quadrant D4,585,621755,978

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0275311
B0272101
C0167761
D0195381

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79064145.236529%
B7906101912.888945%
C7906650.822160%
D79053454.364326%

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 7906 7906 5 5 0.06% 0.06%
B 7905 7905 463 463 5.86% 5.86%
C 7906 7906 7 7 0.09% 0.09%
D 7904 7904 244 244 3.09% 3.09%

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 10 83 3967645 21080.24 903 883 188.2
A 14 248 19062 96.6 903 883 188.2
A 9 191 14209 70.81 903 883 188.2
B 3 112 3018688 17176.14 877 845 175.7
B 5 32 374621 2127.35 877 845 175.7
B 5 255 279378 1585.28 877 845 175.7
C 14 254 112477 517.02 908 913 215.8
C 13 61 6105 24.06 908 913 215.8
C 12 249 5423 20.9 908 913 215.8
D 12 3 516890 2318.87 890 863 222.5
D 13 249 302133 1353.82 890 863 222.5
D 1 232 164586 735.72 890 863 222.5

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