ASTROSAT CZTI

Data Quality Report

Orbit 20170621_G07_040T01_9000001326_level2

Creation date: 2017-09-24T06:37:44.750436
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/AS1G07_040T01_9000001326cztM0_level2.evt modeM0/AS1G07_040T01_9000001326cztM0_level2_quad_clean.evt
Size (bytes)3,111,955,200536,929,920
Size2.9 GB 512.1 MB
Events in quadrant A24,222,9613,479,563
Events in quadrant B18,510,0693,530,240
Events in quadrant C17,293,3963,434,389
Events in quadrant D31,630,2683,178,753

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07840
B07840
C07840
D07840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0979820
B0812700
C0789530
D01211340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A384486891.792031%
B384483260.847898%
C384481210.314711%
D3844730627.964210%

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 46404 38456 165 165 0.36% 0.43%
B 46404 38456 14 14 0.03% 0.04%
C 46404 38456 1 1 0.00% 0.00%
D 46404 38456 2632 2632 5.67% 6.84%

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 5685886 6296.37 4486 4395 902.3
A 1 162 464843 510.28 4486 4395 902.3
A 1 178 166977 180.18 4486 4395 902.3
B 0 214 283686 328.96 4549 4445 848.9
B 0 219 159624 182.81 4549 4445 848.9
B 4 173 107951 121.94 4549 4445 848.9
C 9 68 234578 230.51 4361 4375 998.7
C 13 61 33251 28.92 4361 4375 998.7
C 8 222 24730 20.38 4361 4375 998.7
D 12 227 6710075 6268.0 4171 4064 1069.9
D 8 195 4294890 4010.57 4171 4064 1069.9
D 1 52 3248571 3032.59 4171 4064 1069.9

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