ASTROSAT CZTI

Data Quality Report

Orbit 03794

Creation date: 2024-06-27T14:33:45.480736
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_03794cztM0_level2.evt modeM0/AS1G05_152T03_9000000488_03794cztM0_level2_quad_clean.evt
Size (bytes)527,232,96082,696,320
Size502.8 MB 78.9 MB
Events in quadrant A4,382,165524,506
Events in quadrant B4,629,751512,380
Events in quadrant C2,921,698522,666
Events in quadrant D3,602,870501,442

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170322
B0178481
C0131571
D0149711

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63514126.487167%
B63515108.030231%
C6351921.448591%
D63512163.401039%

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 7306 6351 176 176 2.41% 2.77%
B 7305 6350 318 318 4.35% 5.01%
C 7306 6352 1 1 0.01% 0.02%
D 7306 6351 118 118 1.62% 1.86%

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 912860 6010.28 738 718 151.8
A 0 50 456731 3004.76 738 718 151.8
A 0 118 119664 783.76 738 718 151.8
B 0 173 970179 6827.31 738 722 142.0
B 14 167 411639 2893.84 738 722 142.0
B 15 204 185775 1303.22 738 722 142.0
C 2 53 46082 269.27 725 729 168.4
C 12 4 18074 102.98 725 729 168.4
C 9 144 9112 49.77 725 729 168.4
D 8 112 440197 2509.96 720 695 175.1
D 1 84 195671 1113.49 720 695 175.1
D 13 223 76674 433.91 720 695 175.1

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