ASTROSAT CZTI

Data Quality Report

Orbit 20190815_A05_072T04_9000003094_level2

Creation date: 2019-08-19T12:22:30.608745
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_072T04_9000003094cztM0_level2_bc.evt modeM0/AS1A05_072T04_9000003094cztM0_level2_quad_clean.evt
Size (bytes)3,351,631,6801,238,250,240
Size3.1 GB 1.2 GB
Events in quadrant A19,827,2788,006,079
Events in quadrant B23,142,1638,014,660
Events in quadrant C19,960,2647,636,740
Events in quadrant D32,126,8637,362,691

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019320
B019320
C019320
D019320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01949120
B02081050
C01986530
D02331000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A946269841.039883%
B9462516321.724703%
C9462315991.689864%
D9462543204.565390%

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 112305 94635 0 0 0.00% 0.00%
B 112305 94632 26 26 0.02% 0.03%
C 112305 94628 3 3 0.00% 0.00%
D 112305 94632 2112 2112 1.88% 2.23%

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 0 226 33222 25.54 5161 5071 1102.0
A 12 194 32359 24.76 5161 5071 1102.0
A 12 96 29581 22.24 5161 5071 1102.0
B 7 220 978901 1010.51 5204 5090 963.7
B 0 189 504774 518.52 5204 5090 963.7
B 3 64 392447 401.96 5204 5090 963.7
C 9 54 605906 513.74 4960 4941 1169.8
C 7 247 133341 109.76 4960 4941 1169.8
C 10 91 70115 55.71 4960 4941 1169.8
D 1 52 3974263 3440.94 4979 4811 1153.6
D 7 223 3361917 2910.12 4979 4811 1153.6
D 1 239 1823647 1576.67 4979 4811 1153.6

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