ASTROSAT CZTI

Data Quality Report

Orbit 20170704_G07_049T02_9000001354_level2

Creation date: 2017-09-24T08:53:18.124543
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/AS1G07_049T02_9000001354cztM0_level2.evt modeM0/AS1G07_049T02_9000001354cztM0_level2_quad_clean.evt
Size (bytes)2,000,390,400593,640,000
Size1.9 GB 566.1 MB
Events in quadrant A14,173,6163,800,404
Events in quadrant B14,887,4434,694,016
Events in quadrant C13,275,1523,790,177
Events in quadrant D16,243,8923,662,009

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0618360
B0637630
C0606100
D0684790

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0530
C0530
D0540

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05960
B06000
C06000
D06020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A296322290.772813%
B296323271.103537%
C296381970.664687%
D296514481.510910%

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 34877 29761 0 0 0.00% 0.00%
B 34877 29767 40 40 0.11% 0.13%
C 34877 29768 4 4 0.01% 0.01%
D 34877 29771 176 176 0.50% 0.59%

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 1 162 365665 518.06 3500 3428 699.2
A 1 178 127714 177.75 3500 3428 699.2
A 1 161 122387 170.13 3500 3428 699.2
B 4 80 434407 672.57 3490 3406 640.8
B 0 214 294846 454.79 3490 3406 640.8
B 15 85 162366 248.05 3490 3406 640.8
C 14 234 32911 38.29 3393 3403 770.6
C 13 61 25509 28.69 3393 3403 770.6
C 8 222 8798 7.0 3393 3403 770.6
D 12 227 1598017 1908.07 3369 3285 835.8
D 1 52 797348 950.09 3369 3285 835.8
D 13 122 301605 356.94 3369 3285 835.8

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