ASTROSAT CZTI

Data Quality Report

Orbit 20180607_A04_089T01_9000002146_level2

Creation date: 2018-06-11T16:53:49.050474
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/AS1A04_089T01_9000002146cztM0_level2_bc.evt modeM0/AS1A04_089T01_9000002146cztM0_level2_quad_clean.evt
Size (bytes)6,336,648,0001,862,297,280
Size5.9 GB 1.7 GB
Events in quadrant A65,719,72411,708,818
Events in quadrant B35,510,33912,040,423
Events in quadrant C42,472,83811,647,736
Events in quadrant D38,661,06111,388,898

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A028640
B028640
C028640
D028640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02250
B02250
C02250
D02250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04064830
B03136940
C03379140
D03235320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14044056754.040872%
B14044030252.153945%
C14044014010.997579%
D14044037992.705070%

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 162957 140447 175 175 0.11% 0.12%
B 162957 140446 350 350 0.21% 0.25%
C 162957 140445 4 4 0.00% 0.00%
D 162957 140441 666 666 0.41% 0.47%

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 23 30770267 19253.48 7377 7252 1597.8
A 8 15 3030257 1891.99 7377 7252 1597.8
A 0 226 1834096 1143.36 7377 7252 1597.8
B 10 16 2778301 1981.08 7496 7291 1398.7
B 0 189 995372 706.41 7496 7291 1398.7
B 0 219 449243 315.96 7496 7291 1398.7
C 3 233 13801677 8725.33 7250 7151 1581.0
C 3 232 66032 37.24 7250 7151 1581.0
C 8 128 61573 34.42 7250 7151 1581.0
D 10 199 4507405 2359.97 7310 7107 1906.9
D 12 110 3190142 1669.19 7310 7107 1906.9
D 1 52 745838 387.39 7310 7107 1906.9

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