ASTROSAT CZTI

Data Quality Report

Orbit 20170605_G07_052T01_9000001270_level2

Creation date: 2017-09-24T03:12:06.847803
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/AS1G07_052T01_9000001270cztM0_level2.evt modeM0/AS1G07_052T01_9000001270cztM0_level2_quad_clean.evt
Size (bytes)1,128,084,480203,889,600
Size1.1 GB 194.4 MB
Events in quadrant A9,706,2361,288,626
Events in quadrant B7,523,3181,294,931
Events in quadrant C7,278,2931,262,526
Events in quadrant D8,580,8741,232,291

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390120
B0327930
C0326810
D0366110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03220
B03240
C03240
D03240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A159103071.929604%
B159041751.100352%
C159071530.961841%
D159054462.804150%

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 17505 15915 107 107 0.61% 0.67%
B 17505 15915 5 5 0.03% 0.03%
C 17505 15915 21 21 0.12% 0.13%
D 17505 15915 335 335 1.91% 2.10%

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 5 1685843 4491.6 1871 1838 374.9
A 15 223 325782 864.03 1871 1838 374.9
A 1 162 144299 379.97 1871 1838 374.9
B 0 214 143289 391.61 1880 1831 361.2
B 10 16 63055 169.49 1880 1831 361.2
B 12 111 40853 108.03 1880 1831 361.2
C 9 68 102475 238.83 1813 1819 421.5
C 14 234 89689 208.49 1813 1819 421.5
C 13 61 13723 28.24 1813 1819 421.5
D 1 52 1545866 3383.08 1800 1751 456.4
D 7 71 84923 182.23 1800 1751 456.4
D 2 234 65201 139.02 1800 1751 456.4

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