ASTROSAT CZTI

Data Quality Report

Orbit 20160115_G02_021T07_9000000274_level2

Creation date: 2017-10-31T14:44:22.988323
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/AS1G02_021T07_9000000274cztM0_level2.evt modeM0/AS1G02_021T07_9000000274cztM0_level2_quad_clean.evt
Size (bytes)8,789,682,240957,191,040
Size8.2 GB 912.8 MB
Events in quadrant A66,031,9586,383,132
Events in quadrant B69,526,2806,490,031
Events in quadrant C63,410,5756,287,232
Events in quadrant D63,587,9836,043,788

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011200
B011200
C011200
D011200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02353620
B02456870
C02276990
D02285530

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A552732580.466774%
B552732570.464965%
C552732370.428781%
D5527311001.990122%

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 62073 55281 2080 2080 3.35% 3.76%
B 62073 55283 2471 2471 3.98% 4.47%
C 62073 55283 1666 1666 2.68% 3.01%
D 62073 55283 2838 2838 4.57% 5.13%

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 8 14 216617 48.63 17116 17194 4101.1
A 12 133 127658 26.93 17116 17194 4101.1
A 8 15 109549 22.52 17116 17194 4101.1
B 8 3 712632 165.04 17927 17981 4209.0
B 0 234 621341 143.35 17927 17981 4209.0
B 15 85 125401 25.52 17927 17981 4209.0
C 8 229 269095 56.22 16167 16687 4489.8
C 9 68 47166 6.79 16167 16687 4489.8
C 7 159 42005 5.64 16167 16687 4489.8
D 13 105 1949268 429.91 15737 16065 4496.7
D 13 53 1494827 328.85 15737 16065 4496.7
D 1 84 750267 163.27 15737 16065 4496.7

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