ASTROSAT CZTI

Data Quality Report

Orbit 18812

Creation date: 2024-06-27T17:55:09.891930
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_173T01_9000002812_18812cztM0_level2.evt modeM0/AS1A05_173T01_9000002812_18812cztM0_level2_quad_clean.evt
Size (bytes)492,612,480102,936,960
Size469.8 MB 98.2 MB
Events in quadrant A3,333,372671,728
Events in quadrant B3,406,820685,625
Events in quadrant C4,499,797645,847
Events in quadrant D3,211,578634,736

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143022
B0145802
C0179812
D0143313

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6888420.609756%
B6888510.740418%
C68881992.889082%
D6887280.406563%

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 7923 6889 1 1 0.01% 0.01%
B 7923 6889 1 1 0.01% 0.01%
C 7923 6889 42 42 0.53% 0.61%
D 7922 6888 2 2 0.03% 0.03%

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 4 2 66405 384.64 845 827 170.5
A 13 254 11705 63.8 845 827 170.5
A 0 226 7351 38.27 845 827 170.5
B 4 216 20932 123.5 851 831 162.8
B 12 111 18819 110.52 851 831 162.8
B 0 229 18004 105.51 851 831 162.8
C 3 233 1043669 5540.78 807 815 188.2
C 9 54 181800 961.59 807 815 188.2
C 14 238 126066 665.47 807 815 188.2
D 7 223 59599 294.61 815 791 199.6
D 2 234 28730 139.97 815 791 199.6
D 12 110 28407 138.35 815 791 199.6

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