ASTROSAT CZTI

Data Quality Report

Orbit 20240822_T05_221T01_9000006404_level2

Creation date: 2024-08-24T09:52:35.872067
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/AS1T05_221T01_9000006404cztM0_level2.fits modeM0/AS1T05_221T01_9000006404cztM0_level2_quad_clean.evt
Size (bytes)196,513,920188,844,480
Size187.4 MB 180.1 MB
Events in quadrant A1,369,9501,333,570
Events in quadrant B78,64096
Events in quadrant C1,399,0481,308,651
Events in quadrant D1,213,4281,198,766

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05480
B05480
C05480
D05460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0983260
B0286870
C0566220
D0577050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A272805862.148094%
B273132731299.996339%
C272981680.615430%
D272932280.835379%

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 27765 27302 0 0 0.00% 0.00%
B 27755 12650 0 0 0.00% 0.00%
C 27765 27306 0 0 0.00% 0.00%
D 27765 27302 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 7 110 1145 8.75 356 332 92.9
A 15 236 1130 8.59 356 332 92.9
A 7 30 1063 7.87 356 332 92.9
B 2 9 79 9.04 21 20 6.5
B 3 17 63 6.59 21 20 6.5
B 5 62 62 6.43 21 20 6.5
C 1 81 1062 7.25 370 341 99.4
C 3 202 1050 7.13 370 341 99.4
C 1 80 1031 6.94 370 341 99.4
D 3 31 898 5.95 347 312 98.5
D 7 3 898 5.95 347 312 98.5
D 1 31 891 5.88 347 312 98.5

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