ASTROSAT CZTI

Data Quality Report

Orbit 15562

Creation date: 2024-06-27T17:10:32.478357
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/AS1G08_028T01_9000002306_15562cztM0_level2.evt modeM0/AS1G08_028T01_9000002306_15562cztM0_level2_quad_clean.evt
Size (bytes)507,850,560100,650,240
Size484.3 MB 96.0 MB
Events in quadrant A3,651,995657,201
Events in quadrant B3,811,562659,213
Events in quadrant C3,690,434626,626
Events in quadrant D3,752,666619,292

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149003
B0154122
C0149522
D0153602

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69722032.911647%
B69722213.169822%
C69722343.356282%
D69721942.782559%

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 9213 6973 6 6 0.07% 0.09%
B 9213 6973 9 9 0.10% 0.13%
C 9213 6973 7 7 0.08% 0.10%
D 9213 6973 15 15 0.16% 0.22%

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 15 223 26552 136.26 937 918 188.1
A 7 16 9475 45.48 937 918 188.1
A 0 226 8335 39.42 937 918 188.1
B 0 189 78040 433.21 923 898 178.1
B 4 48 53962 298.0 923 898 178.1
B 0 214 25200 136.48 923 898 178.1
C 14 238 135656 647.71 888 896 208.1
C 3 233 63830 302.49 888 896 208.1
C 10 22 23691 109.56 888 896 208.1
D 1 52 70190 310.67 909 883 223.1
D 12 221 63207 279.37 909 883 223.1
D 5 222 62766 277.39 909 883 223.1

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