ASTROSAT CZTI

Data Quality Report

Orbit 10936

Creation date: 2024-06-27T16:05:46.839662
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/AS1G08_036T01_9000001584_10936cztM0_level2.evt modeM0/AS1G08_036T01_9000001584_10936cztM0_level2_quad_clean.evt
Size (bytes)1,437,295,680205,300,800
Size1.3 GB 195.8 MB
Events in quadrant A9,269,6831,267,283
Events in quadrant B12,351,4641,268,175
Events in quadrant C7,858,1591,282,736
Events in quadrant D12,837,5791,161,664

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0396424
B0484903
C0362633
D0506543

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03680
B03680
C03680
D03680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A179382921.627829%
B179389855.491136%
C17938780.434831%
D1793812136.762181%

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 19914 17941 124 124 0.62% 0.69%
B 19914 17941 567 567 2.85% 3.16%
C 19914 17941 0 0 0.00% 0.00%
D 19914 17940 862 862 4.33% 4.80%

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 8 5 658816 1553.87 2061 2012 422.7
A 15 223 364434 857.42 2061 2012 422.7
A 15 239 142032 331.26 2061 2012 422.7
B 4 239 3642982 9355.33 2051 1999 389.2
B 4 81 364312 930.95 2051 1999 389.2
B 0 219 124241 314.1 2051 1999 389.2
C 8 128 14844 27.56 2004 2011 465.7
C 13 61 14700 27.25 2004 2011 465.7
C 8 112 9802 16.73 2004 2011 465.7
D 13 152 3297196 7024.34 1934 1876 469.1
D 1 52 1246862 2653.83 1934 1876 469.1
D 8 195 288302 610.55 1934 1876 469.1

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