ASTROSAT CZTI

Data Quality Report

Orbit 20180613_A04_075T02_9000002158_level2

Creation date: 2018-06-15T18:05:55.976861
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/AS1A04_075T02_9000002158cztM0_level2_bc.evt modeM0/AS1A04_075T02_9000002158cztM0_level2_quad_clean.evt
Size (bytes)391,944,960128,286,720
Size373.8 MB 122.3 MB
Events in quadrant A2,792,704814,870
Events in quadrant B2,165,359820,842
Events in quadrant C4,088,161797,611
Events in quadrant D2,169,325792,005

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0223360
B0202140
C0281890
D0202970

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01900
B01900
C01900
D01900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9520580.609244%
B9520770.808824%
C9520570.598739%
D9520740.777311%

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 10230 9519 0 0 0.00% 0.00%
B 10230 9520 7 7 0.07% 0.07%
C 10230 9520 0 0 0.00% 0.00%
D 10230 9520 12 12 0.12% 0.13%

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 0 23 432483 4120.27 461 450 104.9
A 8 15 201722 1919.52 461 450 104.9
A 1 162 111483 1058.91 461 450 104.9
B 10 16 71372 785.87 463 452 90.2
B 10 246 70422 775.35 463 452 90.2
B 0 219 44205 484.83 463 452 90.2
C 3 233 2297466 22792.64 444 437 100.8
C 3 234 21019 204.23 444 437 100.8
C 8 128 10207 96.94 444 437 100.8
D 12 110 144456 1322.89 451 436 108.9
D 10 199 61757 563.26 451 436 108.9
D 10 70 51664 470.55 451 436 108.9

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