ASTROSAT CZTI

Data Quality Report

Orbit 20181129_A05_194T03_9000002544_level2

Creation date: 2018-11-30T14:49:49.712706
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_194T03_9000002544cztM0_level2_bc.evt modeM0/AS1A05_194T03_9000002544cztM0_level2_quad_clean.evt
Size (bytes)1,707,857,280504,829,440
Size1.6 GB 481.4 MB
Events in quadrant A8,382,8603,232,747
Events in quadrant B9,515,8963,268,579
Events in quadrant C21,563,2453,006,181
Events in quadrant D9,556,3343,057,210

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820850
B0871080
C01388340
D0854680

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08100
B08100
C08100
D08100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A396922480.624811%
B396924201.058148%
C3969220845.250428%
D396925071.277335%

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 47177 39692 1 1 0.00% 0.00%
B 47177 39692 4 4 0.01% 0.01%
C 47177 39690 8 8 0.02% 0.02%
D 47177 39689 110 110 0.23% 0.28%

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 252425 556.14 2082 2041 450.2
A 12 96 90726 196.98 2082 2041 450.2
A 4 2 44989 95.39 2082 2041 450.2
B 0 189 617167 1546.81 2108 2060 397.7
B 0 197 192827 479.72 2108 2060 397.7
B 7 220 180149 447.84 2108 2060 397.7
C 3 233 13769071 30046.59 1963 1952 458.2
C 4 254 172975 373.26 1963 1952 458.2
C 5 112 37470 77.52 1963 1952 458.2
D 1 52 569621 1200.81 2047 1976 472.7
D 15 0 444107 935.3 2047 1976 472.7
D 10 70 206841 433.38 2047 1976 472.7

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