ASTROSAT CZTI

Data Quality Report

Orbit 20160817_G05_245T01_9000000606_level2

Creation date: 2016-09-06T17:47:34.925255
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_245T01_9000000606cztM0_level2_bc.evt modeM0/AS1G05_245T01_9000000606cztM0_level2_quad_clean.evt
Size (bytes)369,812,160123,612,480
Size352.7 MB 117.9 MB
Events in quadrant A2,231,766767,222
Events in quadrant B2,920,880762,575
Events in quadrant C2,266,458760,597
Events in quadrant D3,039,522707,675

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0223330
B0245680
C0224560
D0258280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A107691931.792181%
B107692642.451481%
C107671161.077366%
D107684654.318351%

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 12140 10771 3 3 0.02% 0.03%
B 12140 10768 11 11 0.09% 0.10%
C 12140 10770 3 3 0.02% 0.03%
D 12140 10760 27 27 0.22% 0.25%

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 14 238 55338 435.41 542 530 125.9
A 13 251 33442 261.46 542 530 125.9
A 13 6 20994 162.57 542 530 125.9
B 15 204 314834 2911.36 545 533 108.0
B 14 167 194196 1793.89 545 533 108.0
B 10 16 183027 1690.43 545 533 108.0
C 12 4 165990 1336.73 534 527 123.8
C 1 16 10221 78.32 534 527 123.8
C 13 61 3621 25.0 534 527 123.8
D 13 235 348399 2769.73 521 501 125.6
D 2 136 184127 1461.91 521 501 125.6
D 13 239 177194 1406.71 521 501 125.6

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