ASTROSAT CZTI

Data Quality Report

Orbit 20190917_A06_005T09_9000003168_level2

Creation date: 2019-09-29T06:32:45.220349
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/AS1A06_005T09_9000003168cztM0_level2_bc.evt modeM0/AS1A06_005T09_9000003168cztM0_level2_quad_clean.evt
Size (bytes)1,930,950,720671,011,200
Size1.8 GB 639.9 MB
Events in quadrant A11,249,3364,245,504
Events in quadrant B12,107,7114,333,226
Events in quadrant C10,906,1984,184,259
Events in quadrant D20,693,8464,016,715

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010580
B010580
C010580
D010580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0890
B0900
C0900
D0900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01087170
B01117650
C01098240
D01412270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A516416651.287736%
B516429331.806669%
C5164210221.979009%
D5164122504.357003%

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 68769 51633 0 0 0.00% 0.00%
B 68769 51634 7 7 0.01% 0.01%
C 68769 51632 0 0 0.00% 0.00%
D 68769 51630 274 274 0.40% 0.53%

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 11 47 115580 182.78 2891 2842 616.8
A 13 254 67814 105.34 2891 2842 616.8
A 0 226 18648 25.63 2891 2842 616.8
B 0 197 254548 461.47 2934 2869 545.4
B 3 64 192421 347.56 2934 2869 545.4
B 0 230 185174 334.27 2934 2869 545.4
C 3 233 83990 125.24 2811 2809 648.2
C 10 23 24916 34.1 2811 2809 648.2
C 13 61 16086 20.48 2811 2809 648.2
D 13 174 3673432 5738.59 2836 2742 639.7
D 1 20 2604239 4067.06 2836 2742 639.7
D 13 104 923908 1440.11 2836 2742 639.7

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