ASTROSAT CZTI

Data Quality Report

Orbit 20170318_G06_077T01_9000001090_level2

Creation date: 2018-05-18T00:26:32.946059
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_077T01_9000001090cztM0_level2.evt modeM0/AS1G06_077T01_9000001090cztM0_level2_quad_clean.evt
Size (bytes)12,127,040,6401,922,201,280
Size11.3 GB 1.8 GB
Events in quadrant A93,522,08211,652,743
Events in quadrant B73,477,97312,488,143
Events in quadrant C90,622,45512,116,543
Events in quadrant D99,370,56511,511,950

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03812240
B03208450
C03730150
D04022100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02310
B02310
C02310
D02310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A031040
B030980
C031080
D031040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A152498104926.880090%
B15247327721.818027%
C15249970654.632817%
D152465109837.203621%

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 175898 152791 6860 6860 3.90% 4.49%
B 175899 152796 156 156 0.09% 0.10%
C 175899 152796 4719 4719 2.68% 3.09%
D 175899 152779 7828 7828 4.45% 5.12%

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 0 128 19727976 5585.49 17559 17200 3528.9
A 0 254 3232108 911.02 17559 17200 3528.9
A 4 2 1345502 376.4 17559 17200 3528.9
B 5 255 500573 138.72 18326 17867 3479.7
B 5 250 456715 126.12 18326 17867 3479.7
B 4 239 432831 119.25 18326 17867 3479.7
C 9 68 19326779 4800.94 17495 17576 4022.0
C 1 16 2752336 679.96 17495 17576 4022.0
C 8 208 157270 34.73 17495 17576 4022.0
D 1 52 24624227 5758.55 17188 16739 4273.2
D 4 95 4550706 1061.02 17188 16739 4273.2
D 2 14 1205479 278.18 17188 16739 4273.2

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