ASTROSAT CZTI

Data Quality Report

Orbit 20161006_A02_165T04_9000000712_level2

Creation date: 2016-10-21T06:56:32.762596
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/AS1A02_165T04_9000000712cztM0_level2_bc.evt modeM0/AS1A02_165T04_9000000712cztM0_level2_quad_clean.evt
Size (bytes)230,379,84054,305,280
Size219.7 MB 51.8 MB
Events in quadrant A1,106,741313,298
Events in quadrant B1,304,062312,386
Events in quadrant C1,156,367308,219
Events in quadrant D2,987,933285,453

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125040
B0129170
C0125450
D0182910

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6081350.575563%
B6081540.888012%
C6081230.378227%
D60813235.311626%

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 6861 6081 0 0 0.00% 0.00%
B 6861 6081 0 0 0.00% 0.00%
C 6861 6081 2 2 0.03% 0.03%
D 6861 6081 137 137 2.00% 2.25%

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 12 194 2407 32.11 286 278 66.3
A 0 226 2103 27.52 286 278 66.3
A 13 14 2073 27.07 286 278 66.3
B 15 204 121707 2096.2 289 281 57.9
B 0 219 19524 332.2 289 281 57.9
B 10 246 17223 292.47 289 281 57.9
C 9 16 32582 495.51 282 276 65.2
C 1 16 15371 231.53 282 276 65.2
C 13 61 1861 24.31 282 276 65.2
D 2 152 767577 11426.66 277 265 67.2
D 2 63 667976 9943.43 277 265 67.2
D 2 33 354387 5273.52 277 265 67.2

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