ASTROSAT CZTI

Data Quality Report

Orbit 20160417_G05_238T02_9000000420_level2

Creation date: 2017-10-30T13:24:41.825238
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/AS1G05_238T02_9000000420cztM0_level2.evt modeM0/AS1G05_238T02_9000000420cztM0_level2_quad_clean.evt
Size (bytes)7,488,403,2001,065,340,800
Size7.0 GB 1016.0 MB
Events in quadrant A62,023,5196,592,662
Events in quadrant B48,301,4106,727,800
Events in quadrant C60,763,6746,412,446
Events in quadrant D49,690,6796,411,949

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02441510
B02030940
C02452000
D02134100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018260
B018260
C018260
D018260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04590
B04590
C04590
D04590

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8926649545.549705%
B893096140.687501%
C8930961866.926514%
D8930915731.761301%

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 151730 89290 4243 4243 2.80% 4.75%
B 151730 89332 451 451 0.30% 0.50%
C 151730 89330 6351 6351 4.19% 7.11%
D 151730 89332 1623 1623 1.07% 1.82%

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 9 14416098 7604.41 9554 9367 1894.5
A 0 50 5490306 2893.04 9554 9367 1894.5
A 14 249 2846744 1497.67 9554 9367 1894.5
B 8 3 4779680 2549.3 9917 9694 1871.1
B 14 167 790811 417.46 9917 9694 1871.1
B 0 219 775629 409.35 9917 9694 1871.1
C 0 219 20932190 9711.33 9318 9353 2154.5
C 1 192 1907247 880.91 9318 9353 2154.5
C 6 80 1075426 494.82 9318 9353 2154.5
D 13 114 6863970 2801.05 9368 9155 2447.2
D 7 80 3033999 1236.03 9368 9155 2447.2
D 12 1 573032 230.41 9368 9155 2447.2

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