ASTROSAT CZTI

Data Quality Report

Orbit 20191202_C05_001T01_9000003354_level2

Creation date: 2019-12-03T10:16:10.394120
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/AS1C05_001T01_9000003354cztM0_level2_bc.evt modeM0/AS1C05_001T01_9000003354cztM0_level2_quad_clean.evt
Size (bytes)1,969,125,1201,067,872,320
Size1.8 GB 1018.4 MB
Events in quadrant A11,575,7187,369,976
Events in quadrant B13,883,1167,405,256
Events in quadrant C11,815,3017,022,200
Events in quadrant D18,691,2116,858,389

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011000
B011000
C011000
D011000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120550
B01222300
C01134230
D01333440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A538275531.027365%
B5382710561.961841%
C538278421.564271%
D5382716563.076523%

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 64698 53829 0 0 0.00% 0.00%
B 64698 53827 14 14 0.02% 0.03%
C 64698 53828 1 1 0.00% 0.00%
D 64698 53828 454 454 0.70% 0.84%

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 13 254 88234 130.86 2969 2928 651.9
A 11 47 87207 129.29 2969 2928 651.9
A 0 226 19524 25.46 2969 2928 651.9
B 15 33 1028772 1851.88 2967 2905 554.0
B 15 35 321561 575.23 2967 2905 554.0
B 0 190 288847 516.18 2967 2905 554.0
C 10 222 825980 1248.13 2806 2801 659.5
C 10 22 104359 153.99 2806 2801 659.5
C 0 10 33877 47.12 2806 2801 659.5
D 1 52 4896949 7217.75 2868 2773 678.1
D 12 227 955093 1404.45 2868 2773 678.1
D 12 233 713614 1048.32 2868 2773 678.1

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