ASTROSAT CZTI

Data Quality Report

Orbit 20170320_G06_168T20_9000001092_level2

Creation date: 2017-09-23T11:14:27.873743
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_168T20_9000001092cztM0_level2.evt modeM0/AS1G06_168T20_9000001092cztM0_level2_quad_clean.evt
Size (bytes)511,793,28074,283,840
Size488.1 MB 70.8 MB
Events in quadrant A3,751,771456,760
Events in quadrant B3,800,940466,514
Events in quadrant C3,548,511474,850
Events in quadrant D4,008,422448,872

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151300
B0152670
C0143870
D0158900

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5752711.234353%
B57523656.345619%
C5752991.721140%
D57522354.085535%

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 8093 5754 1 1 0.01% 0.02%
B 8093 5754 202 202 2.50% 3.51%
C 8093 5754 4 4 0.05% 0.07%
D 8093 5754 151 151 1.87% 2.62%

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 962878 6581.1 718 702 146.2
A 4 2 7817 48.66 718 702 146.2
A 15 239 7440 46.08 718 702 146.2
B 5 250 826056 5969.99 720 703 138.3
B 4 239 83103 596.02 720 703 138.3
B 0 231 47475 338.31 720 703 138.3
C 1 16 739376 4451.53 716 720 165.9
C 10 22 10808 60.8 716 720 165.9
C 13 61 5387 28.13 716 720 165.9
D 1 52 1301603 7554.08 706 687 172.2
D 13 169 31339 177.99 706 687 172.2
D 2 234 16953 94.45 706 687 172.2

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