ASTROSAT CZTI

Data Quality Report

Orbit 20181005_A05_101T01_9000002412_level2

Creation date: 2018-10-08T09:33:56.699127
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_101T01_9000002412cztM0_level2_bc.evt modeM0/AS1A05_101T01_9000002412cztM0_level2_quad_clean.evt
Size (bytes)1,265,722,560417,752,640
Size1.2 GB 398.4 MB
Events in quadrant A7,589,5822,603,188
Events in quadrant B12,589,5142,597,424
Events in quadrant C7,110,7432,666,422
Events in quadrant D8,852,2152,580,648

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0686390
B0886620
C0676190
D0721920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0750
B0750
C0750
D0750

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06560
B06560
C06560
D06560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A320825041.570974%
B3208218985.916090%
C320824611.436943%
D320826041.882676%

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 39653 32084 1 1 0.00% 0.00%
B 39653 32081 190 190 0.48% 0.59%
C 39653 32082 0 0 0.00% 0.00%
D 39653 32084 102 102 0.26% 0.32%

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 622093 1626.03 1804 1776 381.5
A 3 1 21608 51.98 1804 1776 381.5
A 9 143 14961 34.56 1804 1776 381.5
B 3 112 4425711 13343.0 1811 1774 331.6
B 4 173 262033 784.97 1811 1774 331.6
B 15 35 237748 711.72 1811 1774 331.6
C 3 233 180310 433.14 1802 1802 412.1
C 13 61 10535 21.19 1802 1802 412.1
C 0 207 9465 18.59 1802 1802 412.1
D 12 110 734510 1808.05 1814 1758 405.3
D 12 218 623416 1533.93 1814 1758 405.3
D 1 52 320921 787.53 1814 1758 405.3

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