ASTROSAT CZTI

Data Quality Report

Orbit 26204

Creation date: 2024-06-27T19:26:04.455139
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/AS1C05_007T01_9000003786_26204cztM0_level2.evt modeM0/AS1C05_007T01_9000003786_26204cztM0_level2_quad_clean.evt
Size (bytes)537,347,52098,807,040
Size512.5 MB 94.2 MB
Events in quadrant A3,510,714644,968
Events in quadrant B3,906,167638,568
Events in quadrant C3,619,533613,014
Events in quadrant D4,761,034606,794

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147920
B0158890
C0150650
D0186820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70131231.753886%
B70142783.963502%
C70131732.466847%
D70132223.165550%

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 7233 7015 4 4 0.06% 0.06%
B 7234 7016 141 141 1.95% 2.01%
C 7233 7015 2 2 0.03% 0.03%
D 7233 7015 159 159 2.20% 2.27%

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 0 13 78485 434.52 890 871 178.6
A 13 254 11724 60.76 890 871 178.6
A 3 137 8315 41.67 890 871 178.6
B 5 172 418010 2480.8 871 849 168.2
B 0 190 47354 276.56 871 849 168.2
B 15 35 23328 133.68 871 849 168.2
C 3 233 209326 1047.42 841 846 199.0
C 14 238 133156 664.74 841 846 199.0
C 13 61 5876 25.27 841 846 199.0
D 1 52 1398953 6775.51 856 835 206.3
D 12 233 57839 276.25 856 835 206.3
D 13 104 38406 182.08 856 835 206.3

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