ASTROSAT CZTI

Data Quality Report

Orbit 31716

Creation date: 2024-06-27T20:31:51.993150
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/AS1T04_034T01_9000004632_31716cztM0_level2.evt modeM0/AS1T04_034T01_9000004632_31716cztM0_level2_quad_clean.evt
Size (bytes)644,207,04099,771,840
Size614.4 MB 95.1 MB
Events in quadrant A5,545,217634,608
Events in quadrant B5,422,939665,758
Events in quadrant C4,099,779653,631
Events in quadrant D4,026,997638,594

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206111
B0201691
C0163861
D0160401

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A614793815.259476%
B61472193.562714%
C61473225.238328%
D61471101.789491%

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 7447 6148 668 668 8.97% 10.87%
B 7447 6148 26 26 0.35% 0.42%
C 7447 6148 92 92 1.24% 1.50%
D 7447 6148 39 39 0.52% 0.63%

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 1472770 9200.89 805 793 160.0
A 12 96 957467 5979.88 805 793 160.0
A 13 254 10991 63.74 805 793 160.0
B 6 159 1742118 10795.01 854 836 161.3
B 4 80 106473 654.89 854 836 161.3
B 15 33 61567 376.5 854 836 161.3
C 0 10 447149 2329.75 830 841 191.6
C 3 233 206000 1070.94 830 841 191.6
C 14 238 135324 702.01 830 841 191.6
D 8 195 610810 3023.75 851 829 201.7
D 1 52 93617 459.96 851 829 201.7
D 13 249 53638 261.78 851 829 201.7

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