ASTROSAT CZTI

Data Quality Report

Orbit 18173

Creation date: 2024-06-27T17:46:10.899145
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_063T02_9000002708_18173cztM0_level2.evt modeM0/AS1A05_063T02_9000002708_18173cztM0_level2_quad_clean.evt
Size (bytes)48,372,4806,940,800
Size46.1 MB 6.6 MB
Events in quadrant A334,25945,843
Events in quadrant B332,86946,943
Events in quadrant C322,89239,100
Events in quadrant D426,82924,400

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A088
B088
C077
D01111

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01337911951
B01376012335
C01418212797
D02246420855

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140123
B0135120
C0128112
D0137123

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71210.140449%
B70800.000000%
C66940.597907%
D49691.814516%

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 7509 981 0 0 0.00% 0.00%
B 10759 971 0 0 0.00% 0.00%
C 7504 926 0 0 0.00% 0.00%
D 2087 708 2 2 0.10% 0.28%

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 0 226 714 31.58 86 84 20.0
A 3 137 657 28.72 86 84 20.0
A 12 194 645 28.12 86 84 20.0
B 0 189 2069 107.92 84 82 18.4
B 12 111 2051 106.94 84 82 18.4
B 11 111 1799 93.25 84 82 18.4
C 4 254 13576 687.04 76 76 19.6
C 14 238 11924 602.96 76 76 19.6
C 13 61 508 21.99 76 76 19.6
D 7 238 177843 11094.27 57 55 16.0
D 9 64 26926 1676.8 57 55 16.0
D 1 52 2480 151.32 57 55 16.0

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter