ASTROSAT CZTI

Data Quality Report

Orbit 24684

Creation date: 2024-06-27T19:08:44.623873
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/AS1T03_191T01_9000003618_24684cztM0_level2.evt modeM0/AS1T03_191T01_9000003618_24684cztM0_level2_quad_clean.evt
Size (bytes)698,662,080142,263,360
Size666.3 MB 135.7 MB
Events in quadrant A3,567,488984,856
Events in quadrant B3,796,047987,814
Events in quadrant C3,629,894939,144
Events in quadrant D9,649,465865,779

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157562
B0163142
C0157792
D0338444

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7628700.917672%
B76281291.691138%
C76281011.324069%
D7627142318.657401%

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 7853 7629 4 4 0.05% 0.05%
B 7853 7629 36 36 0.46% 0.47%
C 7853 7629 4 4 0.05% 0.05%
D 7852 7627 1538 1538 19.59% 20.17%

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 30858 161.93 914 894 185.0
A 13 254 12584 63.17 914 894 185.0
A 3 137 8378 40.44 914 894 185.0
B 4 80 149011 857.58 902 875 172.7
B 3 64 39810 225.4 902 875 172.7
B 0 190 28852 161.96 902 875 172.7
C 14 238 137618 682.21 863 868 200.5
C 10 91 41118 200.8 863 868 200.5
C 2 16 30658 148.62 863 868 200.5
D 1 52 5860492 28796.41 843 817 203.5
D 7 238 413194 2026.56 843 817 203.5
D 8 195 161288 788.61 843 817 203.5

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