ASTROSAT CZTI

Data Quality Report

Orbit 20161215_G06_169T01_9000000886_level2

Creation date: 2017-09-21T14:01:00.794805
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/AS1G06_169T01_9000000886cztM0_level2.evt modeM0/AS1G06_169T01_9000000886cztM0_level2_quad_clean.evt
Size (bytes)2,023,303,680313,940,160
Size1.9 GB 299.4 MB
Events in quadrant A13,452,5861,926,416
Events in quadrant B14,909,5081,946,089
Events in quadrant C12,909,1851,907,901
Events in quadrant D18,100,4721,788,611

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0587420
B0627140
C0581640
D0729450

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0470
B0470
C0470
D0470

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05760
B05760
C05760
D05760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A281895091.805669%
B281895972.117847%
C281893101.099720%
D2818913734.870694%

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 32994 28196 40 40 0.12% 0.14%
B 32994 28196 90 90 0.27% 0.32%
C 32994 28196 5 5 0.02% 0.02%
D 32994 28196 939 939 2.85% 3.33%

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 14 111 176038 254.88 3375 3302 677.7
A 8 15 147918 213.39 3375 3302 677.7
A 3 1 44294 60.49 3375 3302 677.7
B 4 81 400515 619.79 3385 3301 640.9
B 0 219 356547 551.18 3385 3301 640.9
B 4 80 310934 480.01 3385 3301 640.9
C 9 54 66860 84.61 3262 3268 751.6
C 9 16 61088 76.93 3262 3268 751.6
C 1 16 37982 46.19 3262 3268 751.6
D 2 33 3612780 4588.17 3240 3136 786.7
D 2 152 525064 663.42 3240 3136 786.7
D 2 136 524234 662.36 3240 3136 786.7

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