ASTROSAT CZTI

Data Quality Report

Orbit 20190905_T03_140T01_9000003142_level2

Creation date: 2019-09-07T13:53:01.217134
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/AS1T03_140T01_9000003142cztM0_level2_bc.evt modeM0/AS1T03_140T01_9000003142cztM0_level2_quad_clean.evt
Size (bytes)4,857,526,0801,804,207,680
Size4.5 GB 1.7 GB
Events in quadrant A32,706,94111,705,707
Events in quadrant B30,928,30711,784,881
Events in quadrant C27,616,84511,388,403
Events in quadrant D46,997,49710,853,158

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02910670
B02831420
C02753560
D03458390

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02270
B02270
C02270
D02270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026540
B026540
C026540
D026540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13014819601.505978%
B13014921061.618145%
C13014821571.657344%
D13014960914.680021%

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 152883 130130 32 32 0.02% 0.02%
B 152884 130132 204 204 0.13% 0.16%
C 152884 130134 3 3 0.00% 0.00%
D 152884 130134 913 913 0.60% 0.70%

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 15 236 3578066 2343.7 7079 6955 1523.7
A 9 143 705844 458.68 7079 6955 1523.7
A 5 16 527314 341.51 7079 6955 1523.7
B 3 64 1379810 1031.35 7100 6937 1331.1
B 0 230 490158 363.01 7100 6937 1331.1
B 0 189 480882 356.05 7100 6937 1331.1
C 3 233 1377219 866.36 6765 6742 1581.9
C 0 10 107513 63.7 6765 6742 1581.9
C 10 23 81040 46.97 6765 6742 1581.9
D 1 52 6962696 4416.94 6826 6586 1574.9
D 7 38 4949225 3138.44 6826 6586 1574.9
D 13 174 3316489 2101.7 6826 6586 1574.9

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