ASTROSAT CZTI

Data Quality Report

Orbit 20210316_A10_104T02_9000004258_level2

Creation date: 2021-03-19T20:42:26.196132
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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_104T02_9000004258cztM0_level2_bc.evt modeM0/AS1A10_104T02_9000004258cztM0_level2_quad_clean.evt
Size (bytes)844,911,360242,265,600
Size805.8 MB 231.0 MB
Events in quadrant A2,673,2941,671,446
Events in quadrant B3,041,6701,723,326
Events in quadrant C2,794,9291,577,170
Events in quadrant D16,170,5261,447,717

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0272100
B0286270
C0288650
D0696640

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02720
B02720
C02720
D02720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A132771240.933946%
B132772391.800105%
C1327711438.608872%
D13277240218.091436%

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 15207 13276 1 1 0.01% 0.01%
B 15207 13277 5 5 0.03% 0.04%
C 15207 13275 0 0 0.00% 0.00%
D 15207 13275 428 428 2.81% 3.22%

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 55138 365.48 673 659 149.1
A 13 254 25246 164.95 673 659 149.1
A 0 226 4139 23.35 673 659 149.1
B 5 255 197659 1488.84 685 668 132.3
B 0 156 80452 603.0 685 668 132.3
B 0 189 40575 301.61 685 668 132.3
C 14 254 145585 951.46 629 624 152.4
C 7 247 121745 794.99 629 624 152.4
C 3 233 80748 525.9 629 624 152.4
D 8 195 11678658 79428.58 624 603 147.0
D 7 80 1159045 7879.17 624 603 147.0
D 7 238 252355 1712.29 624 603 147.0

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