ASTROSAT CZTI

Data Quality Report

Orbit 20160808_G05_251T02_9000000588_level2

Creation date: 2017-10-31T16:30:28.017454
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_251T02_9000000588cztM0_level2.evt modeM0/AS1G05_251T02_9000000588cztM0_level2_quad_clean.evt
Size (bytes)5,072,103,360922,242,240
Size4.7 GB 879.5 MB
Events in quadrant A25,213,4706,315,234
Events in quadrant B26,253,9016,410,906
Events in quadrant C24,464,9986,455,418
Events in quadrant D74,036,1155,037,405

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0710
B0710
C0710
D0710

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01147510
B01150660
C01123100
D02575270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011020
B011020
C011020
D011020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5405113502.497641%
B5406511862.193656%
C540539471.751984%
D540311834833.958283%

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 61168 54087 272 272 0.44% 0.50%
B 61168 54089 79 79 0.13% 0.15%
C 61168 54089 66 66 0.11% 0.12%
D 61168 54064 15574 15574 25.46% 28.81%

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 14 111 1389441 1128.4 6074 5935 1226.1
A 12 133 92904 70.93 6074 5935 1226.1
A 8 15 85761 65.11 6074 5935 1226.1
B 15 204 1161313 994.09 6172 6010 1162.2
B 10 16 301184 253.98 6172 6010 1162.2
B 14 167 211885 177.15 6172 6010 1162.2
C 14 48 598824 430.76 6012 6032 1376.2
C 9 247 114997 79.18 6012 6032 1376.2
C 1 16 80590 54.18 6012 6032 1376.2
D 8 112 30022735 24629.59 5098 4943 1218.8
D 2 63 11340187 9300.56 5098 4943 1218.8
D 13 235 8554916 7015.25 5098 4943 1218.8

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