ASTROSAT CZTI

Data Quality Report

Orbit 03478

Creation date: 2024-06-27T14:29:55.713386
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/AS1G05_245T01_9000000460_03478cztM0_level2.evt modeM0/AS1G05_245T01_9000000460_03478cztM0_level2_quad_clean.evt
Size (bytes)608,803,200102,254,400
Size580.6 MB 97.5 MB
Events in quadrant A5,028,399619,341
Events in quadrant B4,731,055627,070
Events in quadrant C4,060,849626,414
Events in quadrant D4,015,930608,234

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210824
B0201293
C0185653
D0187963

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A88622092.358384%
B88621711.929587%
C8862480.541638%
D8862390.440081%

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 9272 8865 60 60 0.65% 0.68%
B 9272 8865 23 23 0.25% 0.26%
C 9272 8865 6 6 0.06% 0.07%
D 9272 8865 19 19 0.20% 0.21%

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 0 118 680599 3185.81 1025 1003 213.3
A 0 50 217041 1012.74 1025 1003 213.3
A 0 226 71765 331.72 1025 1003 213.3
B 15 85 236505 1144.06 1046 1018 205.8
B 15 204 221724 1072.25 1046 1018 205.8
B 2 249 70665 338.36 1046 1018 205.8
C 7 220 56851 235.33 1011 1018 237.3
C 1 192 21611 86.8 1011 1018 237.3
C 13 61 8517 31.61 1011 1018 237.3
D 13 46 113746 461.61 1003 971 244.3
D 13 239 45506 182.29 1003 971 244.3
D 13 223 21553 84.24 1003 971 244.3

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
Veto Counter