ASTROSAT CZTI

Data Quality Report

Orbit 02218

Creation date: 2024-06-27T14:15:24.784022
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/AS1T01_072T05_9000000344_02218cztM0_level2.evt modeM0/AS1T01_072T05_9000000344_02218cztM0_level2_quad_clean.evt
Size (bytes)460,512,00084,424,320
Size439.2 MB 80.5 MB
Events in quadrant A3,216,074500,174
Events in quadrant B3,437,502519,786
Events in quadrant C3,359,578519,029
Events in quadrant D3,430,722503,058

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153422
B0155392
C0154422
D0158142

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B110
C1-1-1
D1-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7390560.757781%
B73901381.867388%
C7390540.730717%
D7390350.473613%

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 7625 7391 0 0 0.00% 0.00%
B 7625 7391 2 2 0.03% 0.03%
C 7625 7391 0 0 0.00% 0.00%
D 7625 7391 10 10 0.13% 0.14%

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 12 194 9811 38.09 837 839 235.5
A 0 226 9397 36.33 837 839 235.5
A 15 47 3865 12.85 837 839 235.5
B 15 85 15100 81.52 886 862 174.6
B 12 111 12777 68.22 886 862 174.6
B 11 111 10774 56.75 886 862 174.6
C 5 234 12454 57.56 850 853 201.5
C 8 112 8669 38.78 850 853 201.5
C 13 61 7784 34.39 850 853 201.5
D 12 217 213801 1059.66 835 814 201.0
D 2 63 16143 76.27 835 814 201.0
D 15 194 15234 71.74 835 814 201.0

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