ASTROSAT CZTI

Data Quality Report

Orbit 24697

Creation date: 2024-06-27T19:08:53.192803
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_24697cztM0_level2.evt modeM0/AS1T03_191T01_9000003618_24697cztM0_level2_quad_clean.evt
Size (bytes)568,445,760134,377,920
Size542.1 MB 128.2 MB
Events in quadrant A3,257,399929,112
Events in quadrant B3,332,984931,331
Events in quadrant C4,201,326876,019
Events in quadrant D5,954,879851,365

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141952
B0143682
C0170862
D0226202

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6921650.939171%
B6922731.054608%
C69211321.907239%
D69214626.675336%

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 7566 6921 0 0 0.00% 0.00%
B 7567 6923 0 0 0.00% 0.00%
C 7566 6922 1 1 0.01% 0.01%
D 7566 6922 191 191 2.52% 2.76%

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 13 254 12025 66.78 842 826 167.7
A 10 255 8696 46.93 842 826 167.7
A 3 137 7653 40.71 842 826 167.7
B 0 190 26588 166.36 829 809 155.0
B 4 80 24044 149.94 829 809 155.0
B 0 189 19618 121.38 829 809 155.0
C 7 247 763053 4178.39 792 796 182.4
C 10 91 133904 729.64 792 796 182.4
C 14 238 127902 696.74 792 796 182.4
D 8 195 1314405 6743.54 799 775 194.8
D 1 52 1047868 5375.27 799 775 194.8
D 7 238 436708 2237.87 799 775 194.8

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