ASTROSAT CZTI

Data Quality Report

Orbit 20170517_A03_036T01_9000001230_level2

Creation date: 2017-09-23T23:04:43.358482
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/AS1A03_036T01_9000001230cztM0_level2.evt modeM0/AS1A03_036T01_9000001230cztM0_level2_quad_clean.evt
Size (bytes)414,480,96078,451,200
Size395.3 MB 74.8 MB
Events in quadrant A2,907,774496,319
Events in quadrant B3,056,586496,851
Events in quadrant C2,653,618496,856
Events in quadrant D3,533,927473,913

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126520
B0129710
C0120340
D0141350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5892540.916497%
B58921161.968771%
C5892290.492193%
D5892931.578411%

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 6937 5893 19 19 0.27% 0.32%
B 6937 5893 71 71 1.02% 1.20%
C 6937 5892 0 0 0.00% 0.00%
D 6937 5892 49 49 0.71% 0.83%

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 8 5 208708 1500.7 681 665 138.6
A 13 248 36498 258.48 681 665 138.6
A 5 16 30437 214.76 681 665 138.6
B 5 250 160738 1230.55 685 668 130.1
B 10 16 64915 493.9 685 668 130.1
B 0 219 32543 245.04 685 668 130.1
C 9 54 8099 47.45 674 677 156.4
C 12 4 5516 30.94 674 677 156.4
C 13 61 5132 28.48 674 677 156.4
D 8 195 488629 3020.77 668 649 161.5
D 10 253 140545 866.01 668 649 161.5
D 2 152 133334 821.37 668 649 161.5

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