ASTROSAT CZTI

Data Quality Report

Orbit 20180107_A04_048T01_9000001820_level2

Creation date: 2018-08-03T20:26:32.210719
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/AS1A04_048T01_9000001820cztM0_level2_bc.evt modeM0/AS1A04_048T01_9000001820cztM0_level2_quad_clean.evt
Size (bytes)3,119,192,6401,015,531,200
Size2.9 GB 968.5 MB
Events in quadrant A23,272,3626,332,953
Events in quadrant B25,629,8096,384,293
Events in quadrant C17,913,2556,445,726
Events in quadrant D22,196,5416,108,437

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02000510
B02074190
C01710980
D01862430

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01290
B01290
C01290
D01290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016260
B016260
C016260
D016260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8003819352.417602%
B8003856097.007921%
C800389911.238162%
D8003818202.273920%

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 92229 80043 29 29 0.03% 0.04%
B 92229 79998 50 50 0.05% 0.06%
C 92229 80040 36 36 0.04% 0.04%
D 92229 80040 137 137 0.15% 0.17%

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 13 251 1873843 2157.0 4011 3937 866.9
A 15 174 1593199 1833.27 4011 3937 866.9
A 1 162 1228695 1412.8 4011 3937 866.9
B 4 239 4100350 5509.02 3953 3851 743.6
B 0 85 3885268 5219.77 3953 3851 743.6
B 3 64 535718 715.26 3953 3851 743.6
C 4 254 1307556 1475.04 4012 3967 883.8
C 15 208 619237 696.19 4012 3967 883.8
C 0 207 157584 173.82 4012 3967 883.8
D 1 52 1687676 1843.52 3998 3857 913.4
D 5 222 880685 959.99 3998 3857 913.4
D 10 199 779084 848.75 3998 3857 913.4

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