ASTROSAT CZTI

Data Quality Report

Orbit 02686

Creation date: 2024-06-27T14:20:56.145737
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/AS1P01_010T01_9000000398_02686cztM0_level2.evt modeM0/AS1P01_010T01_9000000398_02686cztM0_level2_quad_clean.evt
Size (bytes)428,883,84096,816,960
Size409.0 MB 92.3 MB
Events in quadrant A2,972,963618,503
Events in quadrant B3,072,335626,943
Events in quadrant C3,012,733614,488
Events in quadrant D3,466,341596,475

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140090
B0141950
C0141680
D0152000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68221422.081501%
B68221271.861624%
C6822670.982117%
D68221261.846966%

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 6822 6822 0 0 0.00% 0.00%
B 6822 6822 9 9 0.13% 0.13%
C 6822 6822 1 1 0.01% 0.01%
D 6822 6822 27 27 0.40% 0.40%

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 14 238 16198 97.88 764 745 157.9
A 13 9 9604 56.11 764 745 157.9
A 12 194 8537 49.36 764 745 157.9
B 14 53 36439 240.95 773 751 148.1
B 14 167 34111 225.24 773 751 148.1
B 15 85 17552 113.44 773 751 148.1
C 0 3 70932 404.03 744 745 173.7
C 12 4 18663 103.14 744 745 173.7
C 13 61 6691 34.23 744 745 173.7
D 2 184 279667 1592.21 736 715 175.2
D 12 79 116720 662.13 736 715 175.2
D 13 169 96651 547.58 736 715 175.2

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