ASTROSAT CZTI

Data Quality Report

Orbit 20160828_G05_158T01_9000000630_level2

Creation date: 2017-10-27T05:51:47.571328
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/AS1G05_158T01_9000000630cztM0_level2.evt modeM0/AS1G05_158T01_9000000630cztM0_level2_quad_clean.evt
Size (bytes)5,819,932,8001,044,498,240
Size5.4 GB 996.1 MB
Events in quadrant A37,844,8136,681,794
Events in quadrant B40,680,6966,740,761
Events in quadrant C35,683,5336,736,742
Events in quadrant D56,769,4806,109,173

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660050
B01719150
C01613910
D02237960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01330
B01330
C01330
D01330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015860
B015860
C015860
D015860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7832310991.403164%
B7832310721.368691%
C783235040.643489%
D7832360297.697611%

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 90428 78326 288 288 0.32% 0.37%
B 90428 78327 232 232 0.26% 0.30%
C 90428 78328 21 21 0.02% 0.03%
D 90428 78326 5220 5220 5.77% 6.66%

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 50 1442737 760.73 9321 9135 1884.5
A 13 251 182271 91.87 9321 9135 1884.5
A 15 234 169289 84.98 9321 9135 1884.5
B 15 204 1903625 1067.52 9403 9197 1774.6
B 14 167 835421 465.58 9403 9197 1774.6
B 0 219 746837 415.67 9403 9197 1774.6
C 1 16 337933 158.49 9025 9069 2075.0
C 9 54 76364 32.43 9025 9069 2075.0
C 13 61 74568 31.57 9025 9069 2075.0
D 2 33 5748616 2700.45 8757 8497 2125.6
D 4 95 4299928 2018.91 8757 8497 2125.6
D 13 235 3497781 1641.54 8757 8497 2125.6

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