ASTROSAT CZTI

Data Quality Report

Orbit 20160622_G05_247T01_9000000512_level2

Creation date: 2018-05-17T10:50:52.110609
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/AS1G05_247T01_9000000512cztM0_level2.evt modeM0/AS1G05_247T01_9000000512cztM0_level2_quad_clean.evt
Size (bytes)10,580,284,8002,661,088,320
Size9.9 GB 2.5 GB
Events in quadrant A79,925,78017,670,840
Events in quadrant B77,290,66017,938,511
Events in quadrant C65,577,64417,808,521
Events in quadrant D87,515,47016,917,029

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030540
B030540
C030540
D030540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03438810
B03315660
C03062770
D03699530

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14995947223.148861%
B14995929891.993211%
C1499599850.656846%
D14995954133.609653%

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 191974 149988 2307 2307 1.20% 1.54%
B 191974 149988 1170 1170 0.61% 0.78%
C 191974 149988 73 73 0.04% 0.05%
D 191974 149988 3931 3931 2.05% 2.62%

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 0 50 10401963 3076.46 16718 16342 3375.8
A 4 48 1536460 450.29 16718 16342 3375.8
A 0 118 1500265 439.57 16718 16342 3375.8
B 14 167 6455668 2034.12 16977 16588 3165.5
B 15 204 1548522 483.94 16977 16588 3165.5
B 3 0 1267039 395.02 16977 16588 3165.5
C 9 144 1085315 285.44 16415 16452 3744.6
C 13 61 138421 32.57 16415 16452 3744.6
C 8 128 106696 24.1 16415 16452 3744.6
D 2 63 10120289 2641.73 16181 15720 3825.0
D 10 246 3411507 887.79 16181 15720 3825.0
D 9 82 3318324 863.43 16181 15720 3825.0

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