ASTROSAT CZTI

Data Quality Report

Orbit 20160111_G02_019T04_9000000262_level2

Creation date: 2017-11-02T10:07:17.932425
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/AS1G02_019T04_9000000262cztM0_level2.evt modeM0/AS1G02_019T04_9000000262cztM0_level2_quad_clean.evt
Size (bytes)2,896,580,160190,944,000
Size2.7 GB 182.1 MB
Events in quadrant A21,787,6841,138,260
Events in quadrant B22,398,8871,162,220
Events in quadrant C21,058,8761,141,522
Events in quadrant D21,295,7851,106,058

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03840
C03780
D03700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0774300
B0791840
C0752470
D0760380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A178651210.677302%
B17864920.515002%
C178681020.570853%
D178922861.598480%

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 36010 18182 592 592 1.64% 3.26%
B 36010 18191 649 649 1.80% 3.57%
C 36010 18187 534 534 1.48% 2.94%
D 36010 18225 902 902 2.50% 4.95%

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 10 2 25495 14.42 5686 5720 1371.3
A 12 251 22515 12.25 5686 5720 1371.3
A 13 9 13444 5.63 5686 5720 1371.3
B 0 220 55628 35.67 5893 5916 1393.5
B 4 170 24375 13.25 5893 5916 1393.5
B 4 216 19741 9.92 5893 5916 1393.5
C 14 223 217142 142.32 5325 5509 1487.1
C 8 208 50249 30.09 5325 5509 1487.1
C 7 159 22246 11.26 5325 5509 1487.1
D 13 105 1005758 625.9 5209 5401 1598.3
D 10 84 322235 198.24 5209 5401 1598.3
D 13 169 170823 103.5 5209 5401 1598.3

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