ASTROSAT CZTI

Data Quality Report

Orbit 20180110_G08_072T03_9000001836_level2

Creation date: 2018-07-31T15:02:19.084718
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/AS1G08_072T03_9000001836cztM0_level2_bc.evt modeM0/AS1G08_072T03_9000001836cztM0_level2_quad_clean.evt
Size (bytes)4,476,931,200848,537,280
Size4.2 GB 809.2 MB
Events in quadrant A19,934,2525,445,345
Events in quadrant B67,568,8664,565,857
Events in quadrant C19,159,4725,470,108
Events in quadrant D23,898,5405,152,359

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01803120
B03335710
C01674890
D01838830

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015060
B015060
C015060
D015060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7381516592.247511%
B738152721836.873264%
C7381516792.274605%
D7381533424.527535%

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 85435 73801 4 4 0.00% 0.01%
B 85436 73805 12862 12862 15.05% 17.43%
C 85435 73807 111 111 0.13% 0.15%
D 85436 73806 918 918 1.07% 1.24%

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 13 251 1921099 2371.84 3730 3658 808.4
A 8 15 1269565 1565.91 3730 3658 808.4
A 1 162 1193044 1471.25 3730 3658 808.4
B 2 32 30264666 52980.88 2993 2912 571.2
B 2 48 21242130 37184.64 2993 2912 571.2
B 4 239 2498076 4368.42 2993 2912 571.2
C 15 208 4254637 5220.19 3713 3661 814.3
C 12 4 167371 201.04 3713 3661 814.3
C 14 234 166522 199.99 3713 3661 814.3
D 1 52 6372121 7611.9 3672 3547 836.7
D 10 199 1038108 1236.54 3672 3547 836.7
D 10 157 737371 877.09 3672 3547 836.7

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