ASTROSAT CZTI

Data Quality Report

Orbit 45173

Creation date: 2024-06-27T23:10:13.205958
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/AS1A13_049T05_9000006050_45173cztM0_level2.fits modeM0/AS1A13_049T05_9000006050_45173cztM0_level2_quad_clean.evt
Size (bytes)587,687,040123,206,400
Size560.5 MB 117.5 MB
Events in quadrant A6,372,769807,059
Events in quadrant B4,484,396838,619
Events in quadrant C3,945,283829,001
Events in quadrant D6,345,189711,975

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246142
B0184123
C0172462
D0241392

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78213925.012147%
B78203464.424552%
C78202373.030691%
D78207339.373402%

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 8101 7821 25 25 0.31% 0.32%
B 8100 7820 40 40 0.49% 0.51%
C 8100 7821 46 46 0.57% 0.59%
D 8100 7821 475 475 5.86% 6.07%

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 10 83 2718801 14326.78 908 884 189.7
A 15 174 90853 474.25 908 884 189.7
A 10 248 24824 126.19 908 884 189.7
B 3 112 414657 2270.81 908 877 182.2
B 5 185 106878 581.73 908 877 182.2
B 0 183 86219 468.35 908 877 182.2
C 1 3 120992 565.01 906 912 212.5
C 15 208 100034 466.4 906 912 212.5
C 14 254 88283 411.11 906 912 212.5
D 13 249 1739716 7793.45 890 861 223.1
D 5 235 267401 1194.62 890 861 223.1
D 1 52 247432 1105.12 890 861 223.1

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter