ASTROSAT CZTI

Data Quality Report

Orbit 31999

Creation date: 2024-06-27T20:35:04.980653
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/AS1C06_010T03_9000004676_31999cztM0_level2.evt modeM0/AS1C06_010T03_9000004676_31999cztM0_level2_quad_clean.evt
Size (bytes)570,090,240131,374,080
Size543.7 MB 125.3 MB
Events in quadrant A3,161,717900,090
Events in quadrant B5,581,971893,909
Events in quadrant C3,849,766862,495
Events in quadrant D4,207,497844,963

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139483
B0217132
C0159522
D0172642

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6851160.233543%
B68511982.890089%
C68511742.539775%
D68512473.605313%

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 7806 6852 0 0 0.00% 0.00%
B 7806 6851 110 110 1.41% 1.61%
C 7806 6851 42 42 0.54% 0.61%
D 7806 6852 214 214 2.74% 3.12%

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 6 14357 83.03 815 797 163.3
A 13 254 11744 67.03 815 797 163.3
A 3 137 8198 45.31 815 797 163.3
B 6 159 1940068 12607.55 806 786 153.8
B 10 245 363810 2360.07 806 786 153.8
B 5 172 38611 245.91 806 786 153.8
C 3 233 442139 2416.09 780 784 182.7
C 0 10 190428 1038.16 780 784 182.7
C 14 238 128606 699.73 780 784 182.7
D 13 249 495053 2664.47 777 756 185.5
D 8 195 383019 2060.56 777 756 185.5
D 12 218 201774 1083.57 777 756 185.5

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