ASTROSAT CZTI

Data Quality Report

Orbit 20181215_A05_225T02_9000002570_level2

Creation date: 2018-12-17T09:33:49.262463
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_225T02_9000002570cztM0_level2_bc.evt modeM0/AS1A05_225T02_9000002570cztM0_level2_quad_clean.evt
Size (bytes)333,141,120130,106,880
Size317.7 MB 124.1 MB
Events in quadrant A1,918,684881,608
Events in quadrant B1,904,803877,993
Events in quadrant C1,779,087829,744
Events in quadrant D3,940,740801,176

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173500
B0171040
C0168770
D0237840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79141171.478393%
B7914891.124589%
C7914971.225676%
D79144225.332322%

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 9188 7913 0 0 0.00% 0.00%
B 9188 7912 1 1 0.01% 0.01%
C 9188 7913 0 0 0.00% 0.00%
D 9188 7913 184 184 2.00% 2.33%

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 9 143 53726 515.18 485 478 103.4
A 12 194 3329 27.58 485 478 103.4
A 15 191 3293 27.24 485 478 103.4
B 4 216 22918 249.23 482 475 90.0
B 0 189 12563 134.24 482 475 90.0
B 0 214 6166 63.2 482 475 90.0
C 3 233 17168 155.81 458 456 107.3
C 13 61 2722 21.13 458 456 107.3
C 5 218 2189 16.16 458 456 107.3
D 11 176 1689756 15803.47 465 451 106.9
D 13 232 240460 2245.29 465 451 106.9
D 10 70 61226 568.55 465 451 106.9

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