ASTROSAT CZTI

Data Quality Report

Orbit 20180714_A04_148T03_9000002222_level2

Creation date: 2018-07-16T12:51:21.206615
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/AS1A04_148T03_9000002222cztM0_level2_bc.evt modeM0/AS1A04_148T03_9000002222cztM0_level2_quad_clean.evt
Size (bytes)600,315,840239,189,760
Size572.5 MB 228.1 MB
Events in quadrant A3,232,6381,557,592
Events in quadrant B5,596,8961,559,217
Events in quadrant C4,989,0151,558,315
Events in quadrant D3,318,2341,518,640

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03100
B03100
C03100
D03100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0319410
B0400660
C0379310
D0321940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15232880.577731%
B152326524.280462%
C152324362.862395%
D15232960.630252%

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 18728 15231 0 0 0.00% 0.00%
B 18728 15234 59 59 0.32% 0.39%
C 18728 15229 47 47 0.25% 0.31%
D 18728 15231 9 9 0.05% 0.06%

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 12 189 117273 672.68 798 783 173.2
A 13 248 15800 86.72 798 783 173.2
A 9 143 13821 75.29 798 783 173.2
B 3 64 1007793 6633.1 798 778 151.8
B 10 245 998673 6573.03 798 778 151.8
B 0 229 305051 2004.21 798 778 151.8
C 4 254 1011488 5799.02 785 776 174.3
C 3 233 896153 5137.28 785 776 174.3
C 8 222 6233 31.31 785 776 174.3
D 2 234 60646 321.92 794 767 186.0
D 2 120 49990 264.63 794 767 186.0
D 9 1 43878 231.77 794 767 186.0

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