ASTROSAT CZTI

Data Quality Report

Orbit 31163

Creation date: 2024-06-27T20:24:41.420044
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/AS1C06_006T05_9000004506_31163cztM0_level2.evt modeM0/AS1C06_006T05_9000004506_31163cztM0_level2_quad_clean.evt
Size (bytes)607,034,880115,522,560
Size578.9 MB 110.2 MB
Events in quadrant A3,472,113793,481
Events in quadrant B5,451,771776,680
Events in quadrant C3,592,331743,745
Events in quadrant D5,426,634729,713

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145771
B0205641
C0147961
D0211041

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6529831.271251%
B65301782.725881%
C65301462.235835%
D65301902.909648%

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 7724 6530 0 0 0.00% 0.00%
B 7725 6531 16 16 0.21% 0.24%
C 7725 6531 3 3 0.04% 0.05%
D 7725 6531 134 134 1.73% 2.05%

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 12561 65.67 899 883 177.8
A 3 137 8165 40.95 899 883 177.8
A 0 226 7880 39.35 899 883 177.8
B 6 159 1781531 10879.31 871 851 163.7
B 0 190 117210 710.91 871 851 163.7
B 12 18 38113 227.66 871 851 163.7
C 14 238 137616 705.63 843 848 193.8
C 0 10 122223 626.21 843 848 193.8
C 2 114 15271 74.41 843 848 193.8
D 8 195 1704825 7564.45 857 839 225.3
D 13 249 158014 697.74 857 839 225.3
D 12 233 102150 449.75 857 839 225.3

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