ASTROSAT CZTI

Data Quality Report

Orbit 20170420_A03_074T01_9000001192_level2

Creation date: 2019-11-11T20:00:03.278832
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_074T01_9000001192cztM0_level2_bc.evt modeM0/AS1A03_074T01_9000001192cztM0_level2_quad_clean.evt
Size (bytes)5,080,322,8802,021,670,720
Size4.7 GB 1.9 GB
Events in quadrant A32,400,81412,391,619
Events in quadrant B36,415,49212,527,842
Events in quadrant C32,856,19012,797,788
Events in quadrant D41,035,85712,311,852

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A033270
B033380
C033240
D033280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02350
B02350
C02340
D02330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03385300
B03523550
C03387800
D03627040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16356525891.582857%
B16354133582.053308%
C16363720181.233217%
D16353833172.028275%

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 191579 164326 33 33 0.02% 0.02%
B 191579 164326 67 67 0.03% 0.04%
C 191579 164363 69 69 0.04% 0.04%
D 191579 164336 333 333 0.17% 0.20%

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 13 251 478156 266.04 8153 7983 1767.3
A 4 2 200166 108.75 8153 7983 1767.3
A 13 14 86811 44.6 8153 7983 1767.3
B 0 214 1158154 729.42 8237 7987 1576.8
B 4 81 996775 627.07 8237 7987 1576.8
B 11 51 756853 474.92 8237 7987 1576.8
C 9 54 380192 208.61 8146 8025 1784.0
C 13 255 239607 129.81 8146 8025 1784.0
C 12 4 211793 114.22 8146 8025 1784.0
D 1 52 2180721 1151.91 8098 7846 1886.3
D 2 152 1699249 896.66 8098 7846 1886.3
D 12 233 1253033 660.11 8098 7846 1886.3

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