ASTROSAT CZTI

Data Quality Report

Orbit 20161001_T01_138T01_9000000698_level2

Creation date: 2016-10-21T05:48:41.386201
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/AS1T01_138T01_9000000698cztM0_level2_bc.evt modeM0/AS1T01_138T01_9000000698cztM0_level2_quad_clean.evt
Size (bytes)2,790,673,920855,057,600
Size2.6 GB 815.4 MB
Events in quadrant A16,535,7435,184,243
Events in quadrant B21,188,5355,176,193
Events in quadrant C15,435,1685,234,062
Events in quadrant D25,976,6624,890,938

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01683210
B01796820
C01623990
D01980860

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016060
B016060
C016060
D016060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7893812611.597456%
B7894313881.758231%
C789366230.789247%
D7894132974.176537%

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 90478 78946 22 22 0.02% 0.03%
B 90478 78947 61 61 0.07% 0.08%
C 90478 78942 11 11 0.01% 0.01%
D 90478 78944 447 447 0.49% 0.57%

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 836820 984.65 3780 3692 846.1
A 0 50 636037 747.35 3780 3692 846.1
A 0 247 314139 366.91 3780 3692 846.1
B 15 204 3561396 4786.94 3815 3697 743.2
B 10 16 1100156 1475.3 3815 3697 743.2
B 7 221 440409 587.6 3815 3697 743.2
C 9 247 642618 774.38 3717 3655 825.1
C 1 16 57999 65.86 3717 3655 825.1
C 1 241 43030 47.72 3717 3655 825.1
D 2 33 5381520 6208.21 3665 3515 866.3
D 8 195 1330415 1531.73 3665 3515 866.3
D 2 152 1210273 1393.05 3665 3515 866.3

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