ASTROSAT CZTI

Data Quality Report

Orbit 03787

Creation date: 2024-06-27T14:33:40.347221
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_152T03_9000000488_03787cztM0_level2.evt modeM0/AS1G05_152T03_9000000488_03787cztM0_level2_quad_clean.evt
Size (bytes)501,589,44072,887,040
Size478.4 MB 69.5 MB
Events in quadrant A3,922,841436,293
Events in quadrant B3,634,528443,137
Events in quadrant C3,810,555433,906
Events in quadrant D3,364,179422,712

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163583
B0155112
C0159992
D0150252

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67531622.398934%
B6753610.903302%
C6753691.021768%
D67531151.702947%

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 8633 6754 94 94 1.09% 1.39%
B 8633 6755 23 23 0.27% 0.34%
C 8633 6755 41 41 0.47% 0.61%
D 8633 6755 102 102 1.18% 1.51%

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 13 251 631458 4045.89 760 741 155.9
A 0 118 262642 1680.03 760 741 155.9
A 0 50 44485 280.61 760 741 155.9
B 15 204 304105 2007.87 779 759 151.1
B 0 173 77749 509.6 779 759 151.1
B 4 81 70798 463.59 779 759 151.1
C 2 53 796023 4539.3 746 750 175.2
C 1 16 44682 250.76 746 750 175.2
C 10 65 20796 114.42 746 750 175.2
D 8 112 352846 1967.42 738 718 179.0
D 13 239 100776 559.05 738 718 179.0
D 11 132 23872 129.37 738 718 179.0

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
Veto Counter