ASTROSAT CZTI

Data Quality Report

Orbit 05870

Creation date: 2024-06-27T15:00:14.542284
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/AS1G06_033T01_9000000760_05870cztM0_level2.evt modeM0/AS1G06_033T01_9000000760_05870cztM0_level2_quad_clean.evt
Size (bytes)1,161,417,600191,185,920
Size1.1 GB 182.3 MB
Events in quadrant A7,867,5111,166,862
Events in quadrant B8,276,8821,164,842
Events in quadrant C7,706,8751,167,488
Events in quadrant D10,138,3901,085,056

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03622
B036214
C03626
D03626

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A036560670
B037128727
C036264688
D0436161424

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0181
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17520840.479452%
B175151190.679418%
C17511210.119925%
D174055172.970411%

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 19566 17807 4 4 0.02% 0.02%
B 19566 17792 8 8 0.04% 0.04%
C 19566 17797 0 0 0.00% 0.00%
D 19566 17766 346 346 1.77% 1.95%

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 15 236 88997 211.15 2016 1975 412.1
A 0 226 19712 43.04 2016 1975 412.1
A 12 194 19447 42.39 2016 1975 412.1
B 15 204 98853 249.34 2034 1986 388.5
B 0 214 85656 215.37 2034 1986 388.5
B 10 245 53942 133.74 2034 1986 388.5
C 9 16 24531 48.95 1966 1975 460.8
C 13 61 15794 29.99 1966 1975 460.8
C 8 222 6368 9.53 1966 1975 460.8
D 2 152 1375143 2920.82 1927 1873 470.2
D 1 20 643158 1363.95 1927 1873 470.2
D 2 136 271795 574.1 1927 1873 470.2

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