ASTROSAT CZTI

Data Quality Report

Orbit 17247

Creation date: 2024-06-27T17:34:03.164275
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_063T01_9000002550_17247cztM0_level2.evt modeM0/AS1T03_063T01_9000002550_17247cztM0_level2_quad_clean.evt
Size (bytes)1,126,163,520200,067,840
Size1.0 GB 190.8 MB
Events in quadrant A7,857,6301,232,838
Events in quadrant B8,592,3031,258,284
Events in quadrant C8,060,8401,210,946
Events in quadrant D8,442,7291,183,128

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03460
B03460
C03460
D03460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0348903
B0369333
C0350033
D0372303

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A170281220.716467%
B170292491.462212%
C170292161.268424%
D170292831.661871%

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 18118 17031 0 0 0.00% 0.00%
B 18119 17032 23 23 0.13% 0.14%
C 18119 17032 0 0 0.00% 0.00%
D 18119 17032 146 146 0.81% 0.86%

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 0 226 18165 38.95 2041 1994 415.2
A 12 194 15088 31.54 2041 1994 415.2
A 3 137 14893 31.07 2041 1994 415.2
B 7 220 257447 648.71 2043 1986 393.8
B 0 197 76125 188.27 2043 1986 393.8
B 3 209 71518 176.57 2043 1986 393.8
C 14 238 300093 643.66 1964 1979 463.2
C 1 16 59889 125.03 1964 1979 463.2
C 3 233 41216 84.72 1964 1979 463.2
D 10 70 384762 789.53 1985 1925 484.9
D 13 189 358924 736.25 1985 1925 484.9
D 2 234 82926 167.05 1985 1925 484.9

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