ASTROSAT CZTI

Data Quality Report

Orbit 20160620_G05_246T02_9000000504_level2

Creation date: 2017-10-26T19:24:45.090409
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_246T02_9000000504cztM0_level2.evt modeM0/AS1G05_246T02_9000000504cztM0_level2_quad_clean.evt
Size (bytes)4,263,523,200679,584,960
Size4.0 GB 648.1 MB
Events in quadrant A37,572,6464,042,766
Events in quadrant B29,376,5004,096,524
Events in quadrant C25,519,6124,045,791
Events in quadrant D32,804,4934,482,539

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01497730
B01238180
C01171710
D01381250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011580
B011580
C011580
D011580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0710

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5709416762.935510%
B570929861.727037%
C570916251.094743%
D5709020603.608338%

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 74236 57107 420 420 0.57% 0.74%
B 74236 57107 82 82 0.11% 0.14%
C 74236 57107 12 12 0.02% 0.02%
D 74236 57107 1184 1184 1.59% 2.07%

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 4 48 4930955 3658.94 6632 6491 1345.9
A 8 15 2010915 1489.31 6632 6491 1345.9
A 0 118 1893318 1401.94 6632 6491 1345.9
B 15 204 1081156 836.53 6737 6588 1284.5
B 3 0 680935 524.97 6737 6588 1284.5
B 4 81 608213 468.36 6737 6588 1284.5
C 1 16 168282 108.3 6453 6475 1494.0
C 10 65 134934 85.98 6453 6475 1494.0
C 13 61 54791 32.34 6453 6475 1494.0
D 2 232 3925335 2545.72 6360 6171 1539.5
D 2 63 1908423 1235.62 6360 6171 1539.5
D 12 233 523569 336.08 6360 6171 1539.5

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