ASTROSAT CZTI

Data Quality Report

Orbit 20181018_T03_018T01_9000002442_level2

Creation date: 2018-10-24T13:33:47.875537
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/AS1T03_018T01_9000002442cztM0_level2_bc.evt modeM0/AS1T03_018T01_9000002442cztM0_level2_quad_clean.evt
Size (bytes)8,816,063,0402,717,809,920
Size8.2 GB 2.5 GB
Events in quadrant A54,379,55516,915,888
Events in quadrant B59,957,44417,354,026
Events in quadrant C74,814,58116,737,912
Events in quadrant D62,560,01215,929,376

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A045820
B045820
C045820
D045820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04995630
B05156230
C05757120
D05415440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03660
B03660
C03660
D03660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A22452456412.512426%
B22452448342.152999%
C224524102744.575903%
D224524117775.245319%

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 261370 224518 153 153 0.06% 0.07%
B 261370 224507 424 424 0.16% 0.19%
C 261370 224512 323 323 0.12% 0.14%
D 261369 224471 319 319 0.12% 0.14%

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 15 174 8806041 3530.51 11490 11260 2491.1
A 3 1 516514 202.83 11490 11260 2491.1
A 15 223 380423 148.19 11490 11260 2491.1
B 15 35 3664859 1652.0 11769 11448 2211.5
B 7 220 1494918 670.8 11769 11448 2211.5
B 0 229 1463037 656.38 11769 11448 2211.5
C 3 233 30440731 11786.37 11159 11118 2581.8
C 7 247 1357047 521.32 11159 11118 2581.8
C 13 61 66937 21.62 11159 11118 2581.8
D 1 52 8787722 3445.92 11116 10708 2547.1
D 5 222 3835603 1501.68 11116 10708 2547.1
D 10 70 2005722 783.26 11116 10708 2547.1

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