ASTROSAT CZTI

Data Quality Report

Orbit 20180831_A04_026T01_9000002342_level2

Creation date: 2018-09-01T11:56:02.918916
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/AS1A04_026T01_9000002342cztM0_level2_bc.evt modeM0/AS1A04_026T01_9000002342cztM0_level2_quad_clean.evt
Size (bytes)2,189,531,520751,245,120
Size2.0 GB 716.4 MB
Events in quadrant A15,300,0094,640,183
Events in quadrant B23,472,7194,742,323
Events in quadrant C11,688,5674,772,424
Events in quadrant D11,979,9574,704,672

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01327260
B01572740
C01190180
D01184920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011580
B011580
C011580
D011580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5677219253.390756%
B5677220903.681392%
C567729741.715634%
D567725891.037483%

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 65203 56776 151 151 0.23% 0.27%
B 65203 56774 46 46 0.07% 0.08%
C 65203 56777 6 6 0.01% 0.01%
D 65203 56780 19 19 0.03% 0.03%

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 15 239 4133671 6664.43 2838 2783 619.8
A 13 210 71715 111.21 2838 2783 619.8
A 13 248 56388 86.48 2838 2783 619.8
B 5 65 9581689 17556.73 2880 2809 545.6
B 7 220 472794 861.42 2880 2809 545.6
B 10 245 454711 828.27 2880 2809 545.6
C 3 233 372352 560.83 2829 2817 658.9
C 9 54 197578 295.58 2829 2817 658.9
C 10 22 115357 170.8 2829 2817 658.9
D 2 152 291382 395.92 2865 2778 728.9
D 2 234 236489 320.62 2865 2778 728.9
D 13 172 143996 193.73 2865 2778 728.9

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