ASTROSAT CZTI

Data Quality Report

Orbit 20160403_T01_055T01_9000000408_level2

Creation date: 2016-09-06T17:51:28.300425
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/AS1T01_055T01_9000000408cztM0_level2_bc.evt modeM0/AS1T01_055T01_9000000408cztM0_level2_quad_clean.evt
Size (bytes)717,180,480199,918,080
Size684.0 MB 190.7 MB
Events in quadrant A3,837,6311,181,126
Events in quadrant B5,438,8451,160,078
Events in quadrant C5,500,9131,150,417
Events in quadrant D5,527,5011,139,699

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0424900
B0471440
C0476760
D0475310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04200
B04200
C04200
D04200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A206613321.606892%
B206617213.489667%
C206616042.923382%
D206614982.410338%

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 21956 20660 4 4 0.02% 0.02%
B 21956 20661 199 199 0.91% 0.96%
C 21956 20661 21 21 0.10% 0.10%
D 21956 20662 68 68 0.31% 0.33%

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 120205 566.65 944 920 210.5
A 0 128 34939 161.6 944 920 210.5
A 0 149 12927 57.04 944 920 210.5
B 14 167 1393736 7920.91 946 912 175.8
B 0 189 112661 635.51 946 912 175.8
B 4 81 82886 466.18 946 912 175.8
C 2 53 1319461 6386.21 924 904 206.5
C 0 64 331349 1600.45 924 904 206.5
C 14 67 70122 335.25 924 904 206.5
D 5 233 443843 2044.1 924 889 216.7
D 13 169 359733 1655.96 924 889 216.7
D 2 184 251343 1155.77 924 889 216.7

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