ASTROSAT CZTI

Data Quality Report

Orbit 20190131_A06_006T01_9000002684_level2

Creation date: 2019-02-01T12:34:18.321965
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/AS1A06_006T01_9000002684cztM0_level2_bc.evt modeM0/AS1A06_006T01_9000002684cztM0_level2_quad_clean.evt
Size (bytes)3,179,321,2801,015,200,000
Size3.0 GB 968.2 MB
Events in quadrant A20,669,0306,543,938
Events in quadrant B17,013,2676,649,172
Events in quadrant C15,207,5026,408,998
Events in quadrant D38,386,0396,102,261

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015020
B015020
C015020
D015020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01210
B01210
C01210
D01210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01875130
B01586020
C01541100
D02318000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7356155057.483585%
B7356111021.498076%
C7356111191.521186%
D7356158847.998804%

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 85636 73561 87 87 0.10% 0.12%
B 85636 73558 34 34 0.04% 0.05%
C 85636 73559 0 0 0.00% 0.00%
D 85635 73557 1732 1732 2.02% 2.35%

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 14 111 2989063 3539.64 3893 3828 843.4
A 15 174 1590107 1880.88 3893 3828 843.4
A 4 2 1099248 1298.86 3893 3828 843.4
B 3 64 641458 859.16 3964 3867 742.1
B 7 220 279820 371.85 3964 3867 742.1
B 0 189 260305 345.55 3964 3867 742.1
C 3 233 502251 564.02 3775 3761 883.8
C 9 160 59694 63.29 3775 3761 883.8
C 0 207 54260 57.14 3775 3761 883.8
D 5 222 10133208 11406.22 3788 3657 888.1
D 11 176 7475414 8413.45 3788 3657 888.1
D 7 238 4197654 4722.58 3788 3657 888.1

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