ASTROSAT CZTI

Data Quality Report

Orbit 03873

Creation date: 2024-06-27T14:34:38.001014
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_083T01_9000000494_03873cztM0_level2.evt modeM0/AS1G05_083T01_9000000494_03873cztM0_level2_quad_clean.evt
Size (bytes)1,615,322,880232,102,080
Size1.5 GB 221.3 MB
Events in quadrant A14,366,5001,387,668
Events in quadrant B9,771,0041,488,347
Events in quadrant C12,769,9691,453,015
Events in quadrant D10,782,7601,441,960

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0559624
B0417973
C0503313
D0455053

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03680
B03680
C03680
D03680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18255226812.423993%
B182551921.051767%
C182558214.497398%
D182554002.191180%

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 20270 18257 1891 1891 9.33% 10.36%
B 20270 18257 116 116 0.57% 0.64%
C 20270 18256 586 586 2.89% 3.21%
D 20270 18257 364 364 1.80% 1.99%

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 0 199 4898933 12747.45 1871 1828 384.2
A 0 118 915571 2378.53 1871 1828 384.2
A 0 226 554019 1437.39 1871 1828 384.2
B 15 204 725863 1891.5 2009 1954 382.7
B 10 16 398276 1035.55 2009 1954 382.7
B 4 48 389650 1013.01 2009 1954 382.7
C 2 53 5159623 11659.02 1908 1915 442.4
C 8 128 27938 58.83 1908 1915 442.4
C 12 4 26781 56.21 1908 1915 442.4
D 14 34 1244942 2657.44 1931 1874 467.8
D 1 20 805432 1717.85 1931 1874 467.8
D 13 248 520559 1108.85 1931 1874 467.8

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