ASTROSAT CZTI

Data Quality Report

Orbit 19300

Creation date: 2024-06-27T18:01:07.887150
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/AS1A05_204T01_9000002856_19300cztM0_level2.evt modeM0/AS1A05_204T01_9000002856_19300cztM0_level2_quad_clean.evt
Size (bytes)640,630,080105,396,480
Size611.0 MB 100.5 MB
Events in quadrant A3,848,345686,521
Events in quadrant B4,048,832694,333
Events in quadrant C3,914,051666,998
Events in quadrant D7,031,867571,483

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169773
B0175273
C0170323
D0267513

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8225951.155015%
B82261331.616825%
C82261371.665451%
D8226141417.189399%

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 8690 8227 0 0 0.00% 0.00%
B 8691 8228 1 1 0.01% 0.01%
C 8691 8229 0 0 0.00% 0.00%
D 8691 8228 1067 1067 12.28% 12.97%

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 9 143 33693 163.39 988 964 200.3
A 13 254 12054 55.36 988 964 200.3
A 0 226 8460 37.42 988 964 200.3
B 0 229 163804 855.03 985 957 190.5
B 12 111 23909 120.51 985 957 190.5
B 11 111 20594 103.1 985 957 190.5
C 14 238 146410 646.3 956 961 225.1
C 8 128 14802 61.5 956 961 225.1
C 9 54 10509 42.43 956 961 225.1
D 1 52 3020718 14394.54 871 845 209.8
D 13 138 481614 2291.64 871 845 209.8
D 13 104 100753 476.22 871 845 209.8

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter