ASTROSAT CZTI

Data Quality Report

Orbit 20170318_G06_071T01_9000001088_level2

Creation date: 2017-09-23T10:35:08.933074
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/AS1G06_071T01_9000001088cztM0_level2.evt modeM0/AS1G06_071T01_9000001088cztM0_level2_quad_clean.evt
Size (bytes)1,130,785,920177,958,080
Size1.1 GB 169.7 MB
Events in quadrant A7,804,3821,083,121
Events in quadrant B8,368,4261,096,322
Events in quadrant C7,469,8901,086,491
Events in quadrant D9,522,5711,021,239

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340720
B0353140
C0331740
D0392170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03280
B03280
C03280
D03280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A159673692.311016%
B159684092.561373%
C159662111.321558%
D159625713.577246%

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 17594 15971 55 55 0.31% 0.34%
B 17594 15972 77 77 0.44% 0.48%
C 17594 15973 0 0 0.00% 0.00%
D 17594 15972 239 239 1.36% 1.50%

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 15 223 335402 885.66 1861 1817 376.7
A 13 248 175234 460.42 1861 1817 376.7
A 8 15 73599 190.58 1861 1817 376.7
B 4 239 580059 1614.78 1874 1824 358.1
B 11 51 205551 568.93 1874 1824 358.1
B 10 16 190495 526.88 1874 1824 358.1
C 1 16 331143 780.24 1826 1836 422.1
C 14 67 14649 30.36 1826 1836 422.1
C 13 61 13755 28.24 1826 1836 422.1
D 1 52 1407052 3210.58 1807 1754 437.7
D 13 104 350290 796.27 1807 1754 437.7
D 7 55 206461 467.68 1807 1754 437.7

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