ASTROSAT CZTI

Data Quality Report

Orbit 20161001_G06_087T03_9000000696_level2

Creation date: 2017-10-18T05:50:42.930043
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_087T03_9000000696cztM0_level2.evt modeM0/AS1G06_087T03_9000000696cztM0_level2_quad_clean.evt
Size (bytes)1,813,838,400224,055,360
Size1.7 GB 213.7 MB
Events in quadrant A11,523,8871,282,736
Events in quadrant B12,788,0611,292,195
Events in quadrant C12,076,0461,277,859
Events in quadrant D16,854,8851,213,809

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05070
B05100
C04980
D05140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0523460
B0548240
C0539500
D0672200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A251743651.449909%
B250094621.847335%
C251545952.365429%
D2460012865.227642%

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 32609 26485 27 27 0.08% 0.10%
B 32609 26397 49 49 0.15% 0.19%
C 32609 26481 229 229 0.70% 0.86%
D 32609 26010 805 805 2.47% 3.09%

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 50 185393 306.16 2918 2851 596.2
A 13 6 33497 51.4 2918 2851 596.2
A 0 226 30498 46.37 2918 2851 596.2
B 15 204 708020 1242.8 2937 2867 567.4
B 11 51 150232 259.72 2937 2867 567.4
B 10 16 145508 251.4 2937 2867 567.4
C 1 241 933807 1413.41 2831 2841 658.7
C 8 128 33741 46.91 2831 2841 658.7
C 13 61 22668 30.1 2831 2841 658.7
D 2 33 3785045 5623.27 2748 2663 672.6
D 4 95 606215 897.3 2748 2663 672.6
D 8 195 593432 878.3 2748 2663 672.6

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