ASTROSAT CZTI

Data Quality Report

Orbit 20170617_G07_076T03_9000001314_level2

Creation date: 2017-09-24T05:46:21.648320
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/AS1G07_076T03_9000001314cztM0_level2.evt modeM0/AS1G07_076T03_9000001314cztM0_level2_quad_clean.evt
Size (bytes)1,305,051,840244,054,080
Size1.2 GB 232.7 MB
Events in quadrant A10,868,4821,505,193
Events in quadrant B9,218,7321,546,280
Events in quadrant C9,103,1011,526,045
Events in quadrant D9,023,4621,480,482

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0470
B0470
C0470
D0470

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03940
B03940
C03920
D03960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0447000
B0403330
C0404250
D0408340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A193693882.003201%
B193781870.965012%
C193601180.609504%
D193681220.629905%

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 24177 19465 164 164 0.68% 0.84%
B 24177 19469 5 5 0.02% 0.03%
C 24177 19466 12 12 0.05% 0.06%
D 24177 19469 38 38 0.16% 0.20%

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 5 885859 1902.19 2329 2286 464.5
A 5 16 745949 1600.99 2329 2286 464.5
A 1 162 162842 345.65 2329 2286 464.5
B 12 111 51814 111.44 2354 2301 444.3
B 11 111 41774 88.84 2354 2301 444.3
B 14 111 32935 68.95 2354 2301 444.3
C 14 234 100952 188.56 2281 2297 523.2
C 9 68 54751 100.26 2281 2297 523.2
C 14 67 18712 31.37 2281 2297 523.2
D 1 52 334098 584.32 2255 2202 568.0
D 2 14 74789 127.79 2255 2202 568.0
D 2 234 62481 106.12 2255 2202 568.0

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