ASTROSAT CZTI

Data Quality Report

Orbit 20161213_G05_246T04_9000000882_level2

Creation date: 2017-09-21T13:36:22.954234
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/AS1G05_246T04_9000000882cztM0_level2.evt modeM0/AS1G05_246T04_9000000882cztM0_level2_quad_clean.evt
Size (bytes)7,199,406,7201,352,036,160
Size6.7 GB 1.3 GB
Events in quadrant A47,995,1678,006,861
Events in quadrant B51,261,6468,129,053
Events in quadrant C45,818,6938,063,468
Events in quadrant D66,016,0269,698,736

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01390

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02129070
B02219060
C02109050
D02685400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021000
B021020
C020980
D020920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10292013571.318500%
B10287319921.936368%
C1029179520.925017%
D10292132863.192740%

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 118300 103727 58 58 0.05% 0.06%
B 118300 103673 389 389 0.33% 0.38%
C 118300 103735 15 15 0.01% 0.01%
D 118300 103730 1652 1652 1.40% 1.59%

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 8 15 1259559 520.15 11931 11687 2399.0
A 13 251 336484 135.39 11931 11687 2399.0
A 9 1 228723 90.47 11931 11687 2399.0
B 0 219 889529 387.63 12002 11715 2264.5
B 4 48 850887 370.57 12002 11715 2264.5
B 4 81 649489 281.64 12002 11715 2264.5
C 9 237 251908 90.06 11619 11660 2667.7
C 13 61 91863 30.06 11619 11660 2667.7
C 9 54 70584 22.09 11619 11660 2667.7
D 12 221 8721687 3110.76 11503 11158 2800.1
D 2 33 4636699 1651.9 11503 11158 2800.1
D 14 34 2407507 855.8 11503 11158 2800.1

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