ASTROSAT CZTI

Data Quality Report

Orbit 31507

Creation date: 2024-06-27T20:29:17.216882
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/AS1A10_119T01_9000004590_31507cztM0_level2.evt modeM0/AS1A10_119T01_9000004590_31507cztM0_level2_quad_clean.evt
Size (bytes)545,192,64058,855,680
Size519.9 MB 56.1 MB
Events in quadrant A5,989,099306,483
Events in quadrant B4,209,189382,165
Events in quadrant C2,620,030372,135
Events in quadrant D3,345,172361,059

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0211891
B0161761
C0111371
D0133002

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5134149529.119595%
B51341482.882743%
C51341042.025711%
D51331092.123515%

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 6064 5134 1202 1202 19.82% 23.41%
B 6064 5134 63 63 1.04% 1.23%
C 6064 5134 16 16 0.26% 0.31%
D 6063 5133 70 70 1.15% 1.36%

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 3903850 35537.99 539 528 109.8
A 13 254 7831 66.49 539 528 109.8
A 3 137 5371 44.09 539 528 109.8
B 6 159 1491091 12360.64 619 602 120.6
B 5 172 179595 1484.39 619 602 120.6
B 4 80 45802 374.84 619 602 120.6
C 3 233 131847 927.75 598 602 141.5
C 14 238 96497 677.86 598 602 141.5
C 12 249 15881 108.0 598 602 141.5
D 8 195 368528 2550.78 600 583 144.2
D 12 79 320859 2220.32 600 583 144.2
D 13 249 174951 1208.81 600 583 144.2

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