ASTROSAT CZTI

Data Quality Report

Orbit 20161124_G06_168T04_9000000820_level2

Creation date: 2017-09-19T06:01:58.542419
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_168T04_9000000820cztM0_level2.evt modeM0/AS1G06_168T04_9000000820cztM0_level2_quad_clean.evt
Size (bytes)1,555,908,480225,976,320
Size1.4 GB 215.5 MB
Events in quadrant A8,931,3721,404,257
Events in quadrant B10,021,5441,409,729
Events in quadrant C8,541,3651,414,331
Events in quadrant D18,265,9991,228,132

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410750
B0436200
C0406170
D0684570

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04080
B04080
C04080
D04080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A201361350.670441%
B201363261.618991%
C20136940.466826%
D20136331116.443186%

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 22552 20137 31 31 0.14% 0.15%
B 22552 20137 178 178 0.79% 0.88%
C 22552 20136 0 0 0.00% 0.00%
D 22552 20136 3159 3159 14.01% 15.69%

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 15 236 161375 349.73 2246 2194 455.2
A 8 15 44405 92.74 2246 2194 455.2
A 0 226 21517 42.45 2246 2194 455.2
B 3 64 632462 1468.51 2253 2196 429.2
B 0 219 349127 808.35 2253 2196 429.2
B 11 51 205215 473.03 2253 2196 429.2
C 13 61 17039 29.57 2185 2187 502.2
C 8 222 9552 14.66 2185 2187 502.2
C 14 67 6695 8.98 2185 2187 502.2
D 13 105 8259009 16963.03 2006 1939 486.8
D 12 220 1743804 3578.42 2006 1939 486.8
D 12 110 290945 593.72 2006 1939 486.8

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