ASTROSAT CZTI

Data Quality Report

Orbit 20181228_A05_056T01_9000002604_level2

Creation date: 2019-01-17T17:22:16.700648
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/AS1A05_056T01_9000002604cztM0_level2_bc.evt modeM0/AS1A05_056T01_9000002604cztM0_level2_quad_clean.evt
Size (bytes)5,677,649,2802,097,875,520
Size5.3 GB 2.0 GB
Events in quadrant A42,221,98113,128,581
Events in quadrant B35,128,47213,366,976
Events in quadrant C45,034,27712,760,157
Events in quadrant D38,097,21412,756,252

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02630
B02630
C02630
D02630

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03825780
B03502920
C03938820
D03575870

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A034260
B034260
C034260
D033040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16845248732.892812%
B16845122831.355290%
C16845132831.948935%
D16845218641.106547%

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 197611 168418 149 149 0.08% 0.09%
B 197611 168443 7 7 0.00% 0.00%
C 197611 168449 0 0 0.00% 0.00%
D 197611 168448 112 112 0.06% 0.07%

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 14 237 8177737 4250.85 8830 8654 1921.8
A 0 13 86596 40.56 8830 8654 1921.8
A 15 174 78029 36.1 8830 8654 1921.8
B 0 189 204568 117.58 8990 8771 1665.3
B 4 80 134449 75.47 8990 8771 1665.3
B 4 48 110020 60.8 8990 8771 1665.3
C 3 233 11028983 5538.97 8576 8521 1989.6
C 5 218 821675 408.7 8576 8521 1989.6
C 0 207 112287 52.15 8576 8521 1989.6
D 5 222 1727324 857.67 8806 8524 2004.0
D 13 189 1084305 536.81 8806 8524 2004.0
D 2 234 597534 293.91 8806 8524 2004.0

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