ASTROSAT CZTI

Data Quality Report

Orbit 20190730_A05_101T10_9000003068_level2

Creation date: 2019-08-13T12:55:34.120025
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A05_101T10_9000003068cztM0_level2_bc.evt modeM0/AS1A05_101T10_9000003068cztM0_level2_quad_clean.evt
Size (bytes)676,419,840297,397,440
Size645.1 MB 283.6 MB
Events in quadrant A3,563,4552,000,853
Events in quadrant B3,700,6942,001,053
Events in quadrant C4,635,4711,919,170
Events in quadrant D7,376,5711,870,212

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03600
B03600
C03600
D03600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0362650
B0368370
C0411710
D0504730

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17651700.396578%
B176511200.679848%
C176515703.229279%
D1765110616.010991%

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 19071 17652 2 2 0.01% 0.01%
B 19071 17651 9 9 0.05% 0.05%
C 19071 17652 5 5 0.03% 0.03%
D 19071 17652 147 147 0.77% 0.83%

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 5 16 151549 750.27 890 870 200.8
A 0 226 5824 24.67 890 870 200.8
A 12 194 5698 24.04 890 870 200.8
B 7 220 68780 397.12 887 864 171.0
B 3 64 44269 253.8 887 864 171.0
B 0 197 39473 225.76 887 864 171.0
C 9 54 1268362 6157.33 853 848 205.9
C 3 233 63452 304.12 853 848 205.9
C 7 247 13758 62.71 853 848 205.9
D 5 222 2227132 10966.89 856 824 203.0
D 1 52 1049171 5164.2 856 824 203.0
D 1 20 481052 2365.62 856 824 203.0

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