ASTROSAT CZTI

Data Quality Report

Orbit 26489

Creation date: 2024-06-27T19:29:40.892694
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/AS1A09_038T06_9000003832_26489cztM0_level2.evt modeM0/AS1A09_038T06_9000003832_26489cztM0_level2_quad_clean.evt
Size (bytes)652,230,720139,464,000
Size622.0 MB 133.0 MB
Events in quadrant A3,252,0991,005,278
Events in quadrant B3,352,6441,025,589
Events in quadrant C3,389,415958,135
Events in quadrant D9,348,395810,814

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135270
B0138230
C0139500
D0320600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6072631.037549%
B6072901.482213%
C60721071.762187%
D6072198032.608696%

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 7452 6072 1 1 0.01% 0.02%
B 7452 6072 7 7 0.09% 0.12%
C 7452 6072 2 2 0.03% 0.03%
D 7452 6073 1898 1898 25.47% 31.25%

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 9767 54.54 840 829 163.9
A 0 226 7385 40.01 840 829 163.9
A 3 137 6748 36.12 840 829 163.9
B 15 222 27237 174.25 836 817 151.6
B 12 111 16765 105.18 836 817 151.6
B 15 32 16575 103.93 836 817 151.6
C 3 233 140374 781.88 789 796 178.5
C 14 238 130972 729.22 789 796 178.5
C 4 254 26067 141.56 789 796 178.5
D 1 52 4370789 25896.96 716 699 168.7
D 7 80 1577858 9346.17 716 699 168.7
D 12 233 620101 3670.55 716 699 168.7

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