ASTROSAT CZTI

Data Quality Report

Orbit 20180912_G08_046T09_9000002358_level2

Creation date: 2018-09-14T09:46:19.052241
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_046T09_9000002358cztM0_level2_bc.evt modeM0/AS1G08_046T09_9000002358cztM0_level2_quad_clean.evt
Size (bytes)1,108,638,720504,780,480
Size1.0 GB 481.4 MB
Events in quadrant A7,821,0123,269,741
Events in quadrant B8,585,0123,282,729
Events in quadrant C6,928,4643,142,922
Events in quadrant D7,794,2773,135,597

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07260
B07260
C07260
D07260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0764040
B0781050
C0732560
D0753800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A358067572.114171%
B358065911.650561%
C358064551.270737%
D358064261.189745%

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 39982 35801 36 36 0.09% 0.10%
B 39982 35801 6 6 0.02% 0.02%
C 39982 35802 5 5 0.01% 0.01%
D 39982 35802 10 10 0.03% 0.03%

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 15 239 697840 1788.78 1771 1734 389.2
A 15 157 134774 341.87 1771 1734 389.2
A 13 210 109774 277.63 1771 1734 389.2
B 7 220 403010 1197.44 1780 1738 335.1
B 10 245 205362 607.64 1780 1738 335.1
B 5 65 150775 444.74 1780 1738 335.1
C 3 233 260631 647.07 1703 1690 400.2
C 0 207 58409 141.74 1703 1690 400.2
C 9 236 17472 39.44 1703 1690 400.2
D 10 70 235780 571.4 1757 1695 409.7
D 2 152 218289 528.71 1757 1695 409.7
D 2 234 162168 391.72 1757 1695 409.7

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