ASTROSAT CZTI

Data Quality Report

Orbit 20171128_G08_006T03_9000001732_level2

Creation date: 2018-01-09T07:11:31.131840
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/AS1G08_006T03_9000001732cztM0_level2_bc.evt modeM0/AS1G08_006T03_9000001732cztM0_level2_quad_clean.evt
Size (bytes)1,561,242,240637,917,120
Size1.5 GB 608.4 MB
Events in quadrant A10,251,7054,201,070
Events in quadrant B14,406,2394,186,882
Events in quadrant C7,817,7474,279,230
Events in quadrant D12,202,8994,033,218

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07780
B07780
C07780
D07780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0896290
B01054590
C0776470
D0916230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A381844511.181123%
B3817224286.360683%
C381851020.267121%
D381775811.521859%

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 46289 38194 8 8 0.02% 0.02%
B 46289 38193 89 89 0.19% 0.23%
C 46289 38194 0 0 0.00% 0.00%
D 46289 38195 72 72 0.16% 0.19%

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 1064284 2469.24 1997 1965 430.2
A 13 251 547823 1268.78 1997 1965 430.2
A 9 143 378698 875.67 1997 1965 430.2
B 4 239 2558639 6908.12 1991 1944 370.1
B 3 64 2067980 5582.37 1991 1944 370.1
B 15 204 1088082 2934.72 1991 1944 370.1
C 13 61 12054 23.13 1994 1976 435.8
C 12 4 11628 22.15 1994 1976 435.8
C 8 222 10806 20.26 1994 1976 435.8
D 8 195 2114510 4634.58 1976 1910 455.8
D 1 52 863492 1890.12 1976 1910 455.8
D 13 249 197945 430.06 1976 1910 455.8

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