ASTROSAT CZTI

Data Quality Report

Orbit 20170905_G07_057T01_9000001520_level2

Creation date: 2017-10-21T20:33:13.513304
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_057T01_9000001520cztM0_level2.evt modeM0/AS1G07_057T01_9000001520cztM0_level2_quad_clean.evt
Size (bytes)2,783,609,280462,692,160
Size2.6 GB 441.3 MB
Events in quadrant A19,405,4632,862,930
Events in quadrant B20,345,3062,836,771
Events in quadrant C18,276,1502,893,159
Events in quadrant D23,664,3022,769,805

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0821990
B0843680
C0812170
D0955400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06960
B08410
C07630
D06950

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860
B0860
C0860
D0860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A395482810.710529%
B370579362.525839%
C395252290.579380%
D390925571.424844%

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 61214 43620 3 3 0.00% 0.01%
B 61214 41345 336 336 0.55% 0.81%
C 61214 43601 9 9 0.01% 0.02%
D 61214 41737 208 208 0.34% 0.50%

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 3 80 495645 509.55 4785 4686 963.5
A 15 239 386302 396.06 4785 4686 963.5
A 0 226 43724 40.52 4785 4686 963.5
B 4 239 2356413 2791.66 4467 4364 842.5
B 0 214 251509 293.34 4467 4364 842.5
B 11 51 119079 136.16 4467 4364 842.5
C 14 234 169976 154.77 4638 4670 1068.1
C 13 61 34676 28.09 4638 4670 1068.1
C 8 222 14174 8.9 4638 4670 1068.1
D 8 195 2713826 2515.54 4534 4419 1077.1
D 1 20 1139108 1053.5 4534 4419 1077.1
D 1 52 943501 871.89 4534 4419 1077.1

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