ASTROSAT CZTI

Data Quality Report

Orbit 20170921_A03_078T01_9000001546_level2

Creation date: 2017-10-18T15:42:36.963784
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/AS1A03_078T01_9000001546cztM0_level2.evt modeM0/AS1A03_078T01_9000001546cztM0_level2_quad_clean.evt
Size (bytes)10,792,146,2401,552,561,920
Size10.1 GB 1.4 GB
Events in quadrant A77,780,5269,671,238
Events in quadrant B77,946,6649,878,533
Events in quadrant C58,115,9129,943,640
Events in quadrant D104,496,2068,870,056

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025840
B025820
C025880
D025860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03166210
B03157510
C02612510
D03971800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12638252244.133500%
B12643058354.615202%
C12652410090.797477%
D1258691349010.717492%

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 145086 126942 2927 2927 2.02% 2.31%
B 145086 126950 2450 2450 1.69% 1.93%
C 145086 127039 31 31 0.02% 0.02%
D 145086 126505 10526 10526 7.26% 8.32%

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 15 239 17823976 5899.55 14977 14671 3018.8
A 15 174 579910 187.24 14977 14671 3018.8
A 14 254 512131 164.79 14977 14671 3018.8
B 4 239 15349153 5345.48 15057 14695 2868.7
B 4 81 1092846 375.84 15057 14695 2868.7
B 0 214 997840 342.72 15057 14695 2868.7
C 14 234 299798 82.53 14832 14895 3452.2
C 13 61 109530 27.41 14832 14895 3452.2
C 8 222 42988 8.14 14832 14895 3452.2
D 2 16 24587358 7322.41 13960 13586 3356.0
D 1 52 13614642 4052.8 13960 13586 3356.0
D 12 233 3283419 974.33 13960 13586 3356.0

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