ASTROSAT CZTI

Data Quality Report

Orbit 17149

Creation date: 2024-06-27T17:32:42.219052
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_194T03_9000002544_17149cztM0_level2.evt modeM0/AS1A05_194T03_9000002544_17149cztM0_level2_quad_clean.evt
Size (bytes)465,960,96089,616,960
Size444.4 MB 85.5 MB
Events in quadrant A3,050,335581,321
Events in quadrant B3,281,987584,711
Events in quadrant C4,302,478549,020
Events in quadrant D3,042,858553,107

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133331
B0139882
C0172531
D0134461

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6390440.688576%
B6390480.751174%
C63901091.705790%
D6390620.970266%

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 7515 6391 0 0 0.00% 0.00%
B 7515 6391 7 7 0.09% 0.11%
C 7515 6391 0 0 0.00% 0.00%
D 7515 6390 24 24 0.32% 0.38%

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 12 189 34905 217.62 778 760 156.9
A 12 96 17615 107.42 778 760 156.9
A 0 226 7115 40.5 778 760 156.9
B 0 197 85127 573.26 775 757 147.2
B 0 189 80316 540.58 775 757 147.2
B 0 182 24046 158.24 775 757 147.2
C 3 233 1287974 7414.15 743 748 173.6
C 14 238 114573 655.61 743 748 173.6
C 13 61 5312 26.29 743 748 173.6
D 10 70 110450 598.72 759 737 183.2
D 2 234 29397 156.4 759 737 183.2
D 1 52 17928 93.81 759 737 183.2

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter