ASTROSAT CZTI

Data Quality Report

Orbit 12189

Creation date: 2024-06-27T16:23:35.412480
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/AS1A04_160T01_9000001798_12189cztM0_level2.evt modeM0/AS1A04_160T01_9000001798_12189cztM0_level2_quad_clean.evt
Size (bytes)541,097,280127,249,920
Size516.0 MB 121.4 MB
Events in quadrant A3,593,815877,567
Events in quadrant B5,472,027815,874
Events in quadrant C3,118,412867,567
Events in quadrant D3,750,729828,274

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150692
B0207851
C0138431
D0156431

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66601131.696697%
B666086913.048048%
C6660630.945946%
D66601442.162162%

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 7696 6663 5 5 0.06% 0.08%
B 7696 6663 486 486 6.31% 7.29%
C 7696 6663 11 11 0.14% 0.17%
D 7696 6663 67 67 0.87% 1.01%

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 1 162 173730 1071.03 796 780 161.5
A 1 178 89103 546.96 796 780 161.5
A 1 161 79002 484.41 796 780 161.5
B 4 239 1685178 12215.43 742 723 137.9
B 10 16 408163 2954.7 742 723 137.9
B 15 204 244309 1766.45 742 723 137.9
C 0 207 66167 372.84 763 766 175.4
C 15 208 45714 256.24 763 766 175.4
C 4 175 17005 92.58 763 766 175.4
D 10 157 242913 1343.65 760 738 180.2
D 1 52 189713 1048.48 760 738 180.2
D 13 104 125469 692.04 760 738 180.2

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