ASTROSAT CZTI

Data Quality Report

Orbit 20181015_A05_108T01_9000002438_level2

Creation date: 2018-10-16T17:53:01.515571
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_108T01_9000002438cztM0_level2_bc.evt modeM0/AS1A05_108T01_9000002438cztM0_level2_quad_clean.evt
Size (bytes)2,607,727,680918,872,640
Size2.4 GB 876.3 MB
Events in quadrant A20,308,4985,637,904
Events in quadrant B18,400,7345,899,425
Events in quadrant C18,650,0735,642,790
Events in quadrant D16,527,6525,533,630

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015200
B015200
C015200
D015200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01770860
B01651630
C01668200
D01582630

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7464233444.480051%
B7464212871.724230%
C7464314731.973393%
D746418591.150842%

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 86195 74637 169 169 0.20% 0.23%
B 86195 74635 16 16 0.02% 0.02%
C 86195 74637 0 0 0.00% 0.00%
D 86195 74639 88 88 0.10% 0.12%

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 6007451 7400.35 3718 3643 811.3
A 15 223 33986 37.4 3718 3643 811.3
A 0 226 24400 25.59 3718 3643 811.3
B 4 48 684814 936.21 3853 3751 727.5
B 5 65 594806 812.48 3853 3751 727.5
B 15 35 462394 630.46 3853 3751 727.5
C 3 233 3537643 4100.34 3675 3642 861.9
C 7 247 967475 1118.29 3675 3642 861.9
C 13 61 21516 20.74 3675 3642 861.9
D 13 248 556341 637.44 3739 3599 867.1
D 10 70 309818 353.14 3739 3599 867.1
D 2 234 298741 340.37 3739 3599 867.1

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