ASTROSAT CZTI

Data Quality Report

Orbit 03796

Creation date: 2024-06-27T14:33:47.214390
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/AS1G05_152T03_9000000488_03796cztM0_level2.evt modeM0/AS1G05_152T03_9000000488_03796cztM0_level2_quad_clean.evt
Size (bytes)684,720,00085,584,960
Size653.0 MB 81.6 MB
Events in quadrant A4,991,336535,708
Events in quadrant B4,579,982540,693
Events in quadrant C3,509,139538,128
Events in quadrant D7,160,827466,748

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0196373
B0184432
C0157452
D0263282

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73172593.539702%
B73171612.200355%
C73171251.708350%
D7317140619.215525%

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 7487 7319 134 134 1.79% 1.83%
B 7487 7320 50 50 0.67% 0.68%
C 7487 7320 43 43 0.57% 0.59%
D 7487 7318 1182 1182 15.79% 16.15%

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 13 251 1208858 6916.18 845 826 174.7
A 0 118 266193 1519.27 845 826 174.7
A 15 174 103453 587.56 845 826 174.7
B 15 204 618875 3700.03 858 837 167.0
B 14 167 348275 2080.02 858 837 167.0
B 4 81 112709 669.75 858 837 167.0
C 1 16 167856 855.12 828 832 195.3
C 2 53 76900 389.45 828 832 195.3
C 12 4 14839 71.71 828 832 195.3
D 2 63 3754170 20418.03 753 732 183.8
D 1 84 167220 905.66 753 732 183.8
D 8 112 118606 641.21 753 732 183.8

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
Veto Counter