ASTROSAT CZTI

Data Quality Report

Orbit 30715

Creation date: 2024-06-27T20:18:46.234246
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/AS1A10_071T44_9000004434_30715cztM0_level2.evt modeM0/AS1A10_071T44_9000004434_30715cztM0_level2_quad_clean.evt
Size (bytes)695,744,64066,795,840
Size663.5 MB 63.7 MB
Events in quadrant A4,009,093412,755
Events in quadrant B5,515,279413,812
Events in quadrant C4,236,940387,134
Events in quadrant D6,875,962359,817

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158962
B0203302
C0168212
D0251513

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64351562.424242%
B64351462.268842%
C64352173.372183%
D64344667.242773%

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 7744 6434 53 53 0.68% 0.82%
B 7745 6435 9 9 0.12% 0.14%
C 7745 6435 51 51 0.66% 0.79%
D 7744 6434 428 428 5.53% 6.65%

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 0 13 326278 1754.81 946 932 185.4
A 8 192 27428 142.91 946 932 185.4
A 13 254 11786 58.54 946 932 185.4
B 6 159 1768840 10147.05 936 916 174.2
B 15 32 43042 241.78 936 916 174.2
B 12 111 20431 112.01 936 916 174.2
C 10 22 449501 2210.45 878 886 203.0
C 3 233 162018 793.94 878 886 203.0
C 14 238 147531 722.56 878 886 203.0
D 8 195 2955180 13320.95 874 859 221.8
D 13 174 462610 2082.02 874 859 221.8
D 1 52 66814 297.39 874 859 221.8

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