ASTROSAT CZTI

Data Quality Report

Orbit 02818

Creation date: 2024-06-27T14:22:02.467025
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_999T99_9000000410_02818cztM0_level2.evt modeM0/AS1P01_999T99_9000000410_02818cztM0_level2_quad_clean.evt
Size (bytes)1,796,143,68065,295,360
Size1.7 GB 62.3 MB
Events in quadrant A9,156,778471,711
Events in quadrant B11,743,162441,582
Events in quadrant C15,681,677334,265
Events in quadrant D17,402,916284,912

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0316692
B0393721
C0514691
D0567821

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63241001.581278%
B632466110.452245%
C6324297447.027198%
D6324407064.358001%

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 7344 6325 588 588 8.01% 9.30%
B 7344 6325 1943 1943 26.46% 30.72%
C 7344 6325 4272 4272 58.17% 67.54%
D 7344 6325 5426 5426 73.88% 85.79%

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 0 31 177790 332.67 2280 2258 527.6
A 0 50 54494 99.0 2280 2258 527.6
A 0 117 51290 92.93 2280 2258 527.6
B 3 10 1810735 3475.91 2235 2216 520.3
B 3 11 575707 1102.23 2235 2216 520.3
B 3 12 301077 574.4 2235 2216 520.3
C 0 219 3016865 6152.35 1681 1736 490.1
C 1 16 2718245 5543.02 1681 1736 490.1
C 1 192 1888106 3849.12 1681 1736 490.1
D 0 226 5823556 12229.0 1561 1582 476.1
D 1 7 3501651 7351.86 1561 1582 476.1
D 1 31 813786 1706.03 1561 1582 476.1

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