ASTROSAT CZTI

Data Quality Report

Orbit 20171116_G08_009T01_9000001696_level2

Creation date: 2018-01-09T04:46:24.822885
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_009T01_9000001696cztM0_level2_bc.evt modeM0/AS1G08_009T01_9000001696cztM0_level2_quad_clean.evt
Size (bytes)3,383,242,560877,040,640
Size3.2 GB 836.4 MB
Events in quadrant A29,183,2835,379,753
Events in quadrant B23,981,4315,532,314
Events in quadrant C13,738,3525,616,322
Events in quadrant D30,744,0215,180,759

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014420
B014420
C014420
D014420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02122950
B01880110
C01453110
D02062750

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7075750227.097531%
B7075735034.950747%
C707574540.641633%
D7075749456.988708%

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 81479 70752 482 482 0.59% 0.68%
B 81479 70760 21 21 0.03% 0.03%
C 81479 70763 0 0 0.00% 0.00%
D 81479 70762 894 894 1.10% 1.26%

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 14377678 19103.9 3469 3398 752.4
A 1 162 589061 778.37 3469 3398 752.4
A 9 143 232404 304.36 3469 3398 752.4
B 4 239 6176942 9222.03 3552 3455 669.4
B 15 204 2348731 3503.4 3552 3455 669.4
B 11 51 843506 1254.88 3552 3455 669.4
C 9 54 38062 45.38 3497 3449 762.7
C 13 61 20922 22.91 3497 3449 762.7
C 12 4 12985 12.5 3497 3449 762.7
D 1 52 8377541 10592.27 3425 3300 790.6
D 13 137 4800260 6067.5 3425 3300 790.6
D 2 120 1006384 1268.76 3425 3300 790.6

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