ASTROSAT CZTI

Data Quality Report

Orbit 20180828_G08_028T01_9000002334_level2

Creation date: 2018-08-29T14:23:38.840198
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/AS1G08_028T01_9000002334cztM0_level2_bc.evt modeM0/AS1G08_028T01_9000002334cztM0_level2_quad_clean.evt
Size (bytes)995,656,320406,071,360
Size949.5 MB 387.3 MB
Events in quadrant A6,393,5762,549,260
Events in quadrant B7,019,8972,618,037
Events in quadrant C6,412,9912,486,211
Events in quadrant D8,121,6742,429,694

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06560
B06560
C06560
D06560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0666060
B0678350
C0668120
D0712190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A322586171.912704%
B322587312.266105%
C322587012.173104%
D322586832.117304%

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 36389 32261 0 0 0.00% 0.00%
B 36389 32261 0 0 0.00% 0.00%
C 36389 32260 1 1 0.00% 0.00%
D 36389 32261 104 104 0.29% 0.32%

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 9 143 33527 88.96 1642 1605 358.9
A 15 239 28428 74.75 1642 1605 358.9
A 13 254 11746 28.26 1642 1605 358.9
B 3 209 147474 464.93 1676 1633 313.7
B 3 64 119714 376.43 1676 1633 313.7
B 4 216 54373 168.13 1676 1633 313.7
C 3 233 129423 340.66 1598 1590 375.2
C 7 247 73861 192.6 1598 1590 375.2
C 15 127 42336 108.58 1598 1590 375.2
D 1 52 1569721 3796.17 1604 1560 413.1
D 10 70 132591 317.2 1604 1560 413.1
D 2 234 120004 286.73 1604 1560 413.1

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