ASTROSAT CZTI

Data Quality Report

Orbit 20190206_A05_176T05_9000002706_level2

Creation date: 2019-02-07T09:55:25.669555
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/AS1A05_176T05_9000002706cztM0_level2_bc.evt modeM0/AS1A05_176T05_9000002706cztM0_level2_quad_clean.evt
Size (bytes)401,544,000111,525,120
Size382.9 MB 106.4 MB
Events in quadrant A2,053,363688,208
Events in quadrant B2,191,617693,891
Events in quadrant C2,552,853676,762
Events in quadrant D4,711,444662,417

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01920
B01920
C01920
D01920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0201160
B0206590
C0223760
D0294770

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A94622752.906362%
B94622412.547030%
C94624805.072923%
D94626286.637075%

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 11332 9463 3 3 0.03% 0.03%
B 11332 9462 1 1 0.01% 0.01%
C 11332 9461 9 9 0.08% 0.10%
D 11332 9463 32 32 0.28% 0.34%

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 15 174 51448 448.92 509 498 113.5
A 4 2 42614 371.08 509 498 113.5
A 3 15 5167 41.14 509 498 113.5
B 0 189 118317 1196.39 510 497 98.5
B 7 220 35073 351.1 510 497 98.5
B 0 197 21511 213.38 510 497 98.5
C 4 254 660373 5746.2 488 484 114.8
C 4 238 3306 24.57 488 484 114.8
C 9 160 3033 22.2 488 484 114.8
D 7 238 1793552 15109.32 500 482 118.7
D 13 168 529490 4457.69 500 482 118.7
D 10 70 161652 1358.1 500 482 118.7

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