ASTROSAT CZTI

Data Quality Report

Orbit 47771

Creation date: 2024-07-29T00:14:18.419334
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/AS1C09_004T02_9000006348_47771cztM0_level2.fits modeM0/AS1C09_004T02_9000006348_47771cztM0_level2_quad_clean.evt
Size (bytes)588,150,720117,921,600
Size560.9 MB 112.5 MB
Events in quadrant A7,977,926779,790
Events in quadrant B5,289,749783,476
Events in quadrant C3,915,943763,721
Events in quadrant D4,007,108721,554

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0285843
B0210291
C0171981
D0172621

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74973184.241697%
B74983474.627901%
C74981882.507335%
D74981171.560416%

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 7567 7499 39 39 0.52% 0.52%
B 7568 7500 133 133 1.76% 1.77%
C 7568 7500 94 94 1.24% 1.25%
D 7568 7500 54 54 0.71% 0.72%

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 4565727 26513.99 823 804 172.2
A 15 174 123297 711.46 823 804 172.2
A 13 6 66077 379.12 823 804 172.2
B 0 186 1034355 6417.72 821 794 161.0
B 15 201 192371 1189.56 821 794 161.0
B 5 255 136692 843.84 821 794 161.0
C 12 2 667018 3509.64 809 812 189.8
C 14 254 47932 248.23 809 812 189.8
C 12 250 13483 66.75 809 812 189.8
D 5 171 184788 889.24 821 795 206.9
D 2 249 182829 879.77 821 795 206.9
D 7 67 74744 357.4 821 795 206.9

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