ASTROSAT CZTI

Data Quality Report

Orbit 20160928_G05_132T01_9000000686_level2

Creation date: 2017-10-18T05:11:38.877116
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/AS1G05_132T01_9000000686cztM0_level2.evt modeM0/AS1G05_132T01_9000000686cztM0_level2_quad_clean.evt
Size (bytes)6,203,105,2801,086,494,400
Size5.8 GB 1.0 GB
Events in quadrant A42,905,0116,726,126
Events in quadrant B45,420,7166,797,133
Events in quadrant C40,546,6646,793,735
Events in quadrant D52,830,7126,337,006

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01917190
B01960690
C01873010
D02209290

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01190
B01190
C01190
D01190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018500
B018500
C018480
D018500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9126915461.693894%
B9127314991.642326%
C912729871.081383%
D9126730373.327599%

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 102883 91296 247 247 0.24% 0.27%
B 102883 91296 89 89 0.09% 0.10%
C 102883 91296 1 1 0.00% 0.00%
D 102882 91295 1764 1764 1.71% 1.93%

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 1327813 612.97 10624 10394 2149.2
A 15 174 243735 108.57 10624 10394 2149.2
A 0 247 162589 70.81 10624 10394 2149.2
B 15 204 2130410 1035.4 10762 10511 2047.4
B 0 219 558257 267.53 10762 10511 2047.4
B 4 48 389282 185.0 10762 10511 2047.4
C 13 61 84377 31.23 10320 10373 2370.0
C 14 67 69028 24.75 10320 10373 2370.0
C 9 247 57518 19.89 10320 10373 2370.0
D 2 33 3231266 1283.17 10228 9910 2510.5
D 2 152 2637404 1046.61 10228 9910 2510.5
D 4 95 2042259 809.55 10228 9910 2510.5

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