ASTROSAT CZTI

Data Quality Report

Orbit 20151123_P01_156T01_9000000114_level2

Creation date: 2017-10-26T22:42:42.908158
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/AS1P01_156T01_9000000114cztM0_level2.evt modeM0/AS1P01_156T01_9000000114cztM0_level2_quad_clean.evt
Size (bytes)5,039,141,760196,398,720
Size4.7 GB 187.3 MB
Events in quadrant A36,918,175973,932
Events in quadrant B38,352,1351,001,271
Events in quadrant C36,019,617976,621
Events in quadrant D39,339,622925,265

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06700
B06300
C06040
D06280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01310460
B01349500
C01284170
D01385680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A301672620.868499%
B296863421.152058%
C301372410.799681%
D3015218796.231759%

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 40872 30233 1339 1339 3.28% 4.43%
B 40872 29740 1570 1570 3.84% 5.28%
C 40872 30196 1112 1112 2.72% 3.68%
D 40873 30216 3578 3578 8.75% 11.84%

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 15 127 236255 98.21 9535 9623 2307.7
A 15 17 46807 16.11 9535 9623 2307.7
A 11 79 37854 12.23 9535 9623 2307.7
B 2 2 358451 152.46 9734 9792 2286.9
B 0 220 256479 107.87 9734 9792 2286.9
B 5 65 189542 78.6 9734 9792 2286.9
C 9 83 249579 96.17 8980 9321 2498.4
C 8 208 219296 84.04 8980 9321 2498.4
C 15 241 161306 60.83 8980 9321 2498.4
D 7 70 3469521 1302.76 8568 8891 2656.4
D 7 207 1694299 634.48 8568 8891 2656.4
D 2 16 611125 226.71 8568 8891 2656.4

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