ASTROSAT CZTI

Data Quality Report

Orbit 20161126_A02_173T03_9000000828_level2

Creation date: 2017-09-19T06:54:56.187691
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/AS1A02_173T03_9000000828cztM0_level2.evt modeM0/AS1A02_173T03_9000000828cztM0_level2_quad_clean.evt
Size (bytes)531,244,80083,640,960
Size506.6 MB 79.8 MB
Events in quadrant A3,505,333550,972
Events in quadrant B3,147,022548,834
Events in quadrant C2,458,463546,717
Events in quadrant D6,595,406491,013

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141210
B0132380
C0116060
D0235630

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5650801.415929%
B56501763.115044%
C5650380.672566%
D565082214.548673%

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 5950 5651 5 5 0.08% 0.09%
B 5950 5650 85 85 1.43% 1.50%
C 5950 5650 0 0 0.00% 0.00%
D 5950 5650 617 617 10.37% 10.92%

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 8 15 642060 4909.66 638 622 130.6
A 15 236 235317 1796.39 638 622 130.6
A 13 251 89378 679.35 638 622 130.6
B 0 219 281169 2260.83 643 627 124.1
B 3 64 263174 2115.81 643 627 124.1
B 4 81 46811 372.19 643 627 124.1
C 8 128 5751 35.02 625 626 146.3
C 13 61 5007 29.94 625 626 146.3
C 8 112 3366 18.72 625 626 146.3
D 2 63 3279286 22485.3 594 575 145.8
D 12 220 846391 5800.58 594 575 145.8
D 14 34 51515 349.34 594 575 145.8

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