ASTROSAT CZTI

Data Quality Report

Orbit 25742

Creation date: 2024-06-27T19:21:01.535740
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/AS1A09_033T01_9000003750_25742cztM0_level2.evt modeM0/AS1A09_033T01_9000003750_25742cztM0_level2_quad_clean.evt
Size (bytes)467,637,12085,129,920
Size446.0 MB 81.2 MB
Events in quadrant A3,336,425528,286
Events in quadrant B3,450,749536,524
Events in quadrant C3,405,316514,963
Events in quadrant D3,490,823507,264

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143880
B0146430
C0144970
D0149360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70511061.503333%
B70511181.673521%
C70511251.772798%
D7050891.262411%

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 7386 7051 0 0 0.00% 0.00%
B 7386 7051 1 1 0.01% 0.01%
C 7386 7051 6 6 0.08% 0.09%
D 7385 7050 11 11 0.15% 0.16%

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 13 254 10049 52.65 864 843 174.8
A 3 137 8322 42.77 864 843 174.8
A 0 226 7039 35.44 864 843 174.8
B 15 222 62937 374.49 852 829 165.8
B 12 111 20746 120.09 852 829 165.8
B 11 111 18788 108.29 852 829 165.8
C 14 238 131846 672.4 827 833 194.8
C 3 233 45936 231.48 827 833 194.8
C 13 61 5606 24.5 827 833 194.8
D 1 52 104023 503.91 844 819 204.8
D 7 80 80755 390.3 844 819 204.8
D 13 104 50342 241.81 844 819 204.8

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