ASTROSAT CZTI

Data Quality Report

Orbit 20161002_G06_139T01_9000000700_level2

Creation date: 2016-10-21T06:02:05.461805
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/AS1G06_139T01_9000000700cztM0_level2_bc.evt modeM0/AS1G06_139T01_9000000700cztM0_level2_quad_clean.evt
Size (bytes)1,211,800,320400,432,320
Size1.1 GB 381.9 MB
Events in quadrant A6,649,7512,491,995
Events in quadrant B8,061,4442,492,981
Events in quadrant C8,310,9162,471,384
Events in quadrant D11,412,1402,392,266

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06780
B06780
C06780
D06780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0692400
B0731700
C0751900
D0853780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A331744641.398686%
B331745371.618738%
C331719212.776522%
D3317311303.406385%

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 41005 33175 0 0 0.00% 0.00%
B 41005 33177 16 16 0.04% 0.05%
C 41005 33176 69 69 0.17% 0.21%
D 41005 33175 94 94 0.23% 0.28%

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 6 40838 105.24 1692 1654 372.3
A 0 50 38832 99.85 1692 1654 372.3
A 13 251 30418 77.25 1692 1654 372.3
B 15 204 821520 2516.7 1703 1656 325.8
B 11 51 170099 517.06 1703 1656 325.8
B 7 252 127857 387.39 1703 1656 325.8
C 9 247 1484564 4159.7 1643 1621 356.5
C 1 241 259809 724.22 1643 1621 356.5
C 1 16 115002 318.04 1643 1621 356.5
D 2 152 2081955 5423.95 1667 1607 383.5
D 9 85 1013086 2637.16 1667 1607 383.5
D 8 195 571090 1484.77 1667 1607 383.5

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