ASTROSAT CZTI

Data Quality Report

Orbit 20180828_A04_100T01_9000002336_level2

Creation date: 2018-09-01T11:29:27.633189
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/AS1A04_100T01_9000002336cztM0_level2_bc.evt modeM0/AS1A04_100T01_9000002336cztM0_level2_quad_clean.evt
Size (bytes)4,378,296,9601,892,376,000
Size4.1 GB 1.8 GB
Events in quadrant A29,066,97311,858,542
Events in quadrant B34,516,94912,120,379
Events in quadrant C28,256,96012,014,455
Events in quadrant D31,199,47911,720,270

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A028540
B028540
C028540
D028540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02935110
B03100220
C02927380
D02967820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02240
B02240
C02240
D02240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14021819491.389978%
B14021825881.845697%
C14021822911.633884%
D14021816241.158197%

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 162774 140225 85 85 0.05% 0.06%
B 162774 140221 153 153 0.09% 0.11%
C 162774 140223 0 0 0.00% 0.00%
D 162774 140225 64 64 0.04% 0.05%

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 1052015 677.45 7142 7009 1542.6
A 14 254 148010 91.41 7142 7009 1542.6
A 9 143 129336 79.3 7142 7009 1542.6
B 10 245 875966 641.58 7264 7076 1354.3
B 3 209 849460 622.01 7264 7076 1354.3
B 5 65 847438 620.51 7264 7076 1354.3
C 7 247 534377 320.01 7054 7010 1648.0
C 3 233 237298 139.74 7054 7010 1648.0
C 10 22 118905 67.9 7054 7010 1648.0
D 1 52 1096196 606.39 7118 6910 1796.3
D 2 234 580090 319.08 7118 6910 1796.3
D 5 51 413796 226.51 7118 6910 1796.3

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