ASTROSAT CZTI

Data Quality Report

Orbit 12593

Creation date: 2024-06-27T16:29:43.971049
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_071T01_9000001874_12593cztM0_level2.evt modeM0/AS1G08_071T01_9000001874_12593cztM0_level2_quad_clean.evt
Size (bytes)496,422,720106,035,840
Size473.4 MB 101.1 MB
Events in quadrant A3,362,114684,533
Events in quadrant B3,940,224708,643
Events in quadrant C3,456,442699,466
Events in quadrant D3,809,940641,234

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145223
B0161792
C0148062
D0160752

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6849851.241057%
B68492593.781574%
C68491051.533071%
D68492343.416557%

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 9525 6850 0 0 0.00% 0.00%
B 9525 6851 83 83 0.87% 1.21%
C 9525 6850 9 9 0.09% 0.13%
D 9525 6852 169 169 1.77% 2.47%

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 12 189 28555 159.42 865 847 173.8
A 0 226 7714 39.51 865 847 173.8
A 12 194 6723 33.81 865 847 173.8
B 4 239 308035 1882.78 867 845 163.2
B 3 64 166032 1012.44 867 845 163.2
B 11 51 53736 324.17 867 845 163.2
C 15 208 75246 378.57 854 859 196.5
C 14 234 51564 258.05 854 859 196.5
C 13 61 6212 27.24 854 859 196.5
D 1 52 548494 2774.28 823 798 197.4
D 10 199 49621 247.31 823 798 197.4
D 13 104 29424 145.0 823 798 197.4

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