ASTROSAT CZTI

Data Quality Report

Orbit 14025

Creation date: 2024-06-27T16:49:19.231859
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_002T01_9000002072_14025cztM0_level2.evt modeM0/AS1G08_002T01_9000002072_14025cztM0_level2_quad_clean.evt
Size (bytes)484,295,040113,189,760
Size461.9 MB 107.9 MB
Events in quadrant A3,256,736759,067
Events in quadrant B3,520,563762,616
Events in quadrant C3,273,170760,689
Events in quadrant D4,206,454723,740

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134452
B0143461
C0134141
D0167681

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60481041.719577%
B60481462.414021%
C60481021.686508%
D60481622.678571%

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 7354 6050 0 0 0.00% 0.00%
B 7354 6050 27 27 0.37% 0.45%
C 7354 6050 0 0 0.00% 0.00%
D 7354 6050 60 60 0.82% 0.99%

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 55649 332.0 823 808 165.2
A 1 162 17309 99.89 823 808 165.2
A 8 15 8539 46.8 823 808 165.2
B 10 16 280024 1842.81 807 787 151.5
B 4 173 44630 289.34 807 787 151.5
B 12 111 17390 109.57 807 787 151.5
C 3 233 127913 684.2 806 813 185.8
C 13 61 5726 26.45 806 813 185.8
C 12 4 2663 9.96 806 813 185.8
D 1 52 455653 2167.12 795 784 209.9
D 8 195 291705 1386.02 795 784 209.9
D 10 157 150013 710.97 795 784 209.9

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