ASTROSAT CZTI

Data Quality Report

Orbit 20160319_T01_071T01_9000000382_level2

Creation date: 2018-05-17T04:37:17.359271
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/AS1T01_071T01_9000000382cztM0_level2.evt modeM0/AS1T01_071T01_9000000382cztM0_level2_quad_clean.evt
Size (bytes)11,314,454,4002,011,086,720
Size10.5 GB 1.9 GB
Events in quadrant A77,642,98212,290,463
Events in quadrant B80,252,56912,570,091
Events in quadrant C79,852,38012,435,289
Events in quadrant D93,383,86211,918,216

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02190
B02190
C02190
D02190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A034720
B034720
C034720
D034720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03531420
B03569710
C03605960
D03978880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17080624201.416812%
B17080625111.470089%
C17080623971.403346%
D17080635342.069014%

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 192588 170841 65 65 0.03% 0.04%
B 192588 170841 146 146 0.08% 0.09%
C 192588 170841 485 485 0.25% 0.28%
D 192588 170841 1556 1556 0.81% 0.91%

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 14 238 1061874 260.65 19731 19265 4000.0
A 3 1 441313 105.51 19731 19265 4000.0
A 12 194 220352 50.27 19731 19265 4000.0
B 10 244 785002 201.48 20051 19532 3799.2
B 4 48 399825 100.1 20051 19532 3799.2
B 15 85 367960 91.71 20051 19532 3799.2
C 9 144 1295008 288.86 19131 19191 4416.7
C 9 70 1011210 224.61 19131 19191 4416.7
C 12 254 776496 171.46 19131 19191 4416.7
D 2 184 5915040 1304.88 18936 18402 4518.9
D 2 255 5236189 1154.66 18936 18402 4518.9
D 2 54 1541392 337.03 18936 18402 4518.9

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