ASTROSAT CZTI

Data Quality Report

Orbit 20181219_T03_067T01_9000002582_level2

Creation date: 2018-12-22T10:45:09.536021
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/AS1T03_067T01_9000002582cztM0_level2_bc.evt modeM0/AS1T03_067T01_9000002582cztM0_level2_quad_clean.evt
Size (bytes)4,487,094,7201,558,589,760
Size4.2 GB 1.5 GB
Events in quadrant A26,897,65410,102,795
Events in quadrant B28,158,18110,227,643
Events in quadrant C24,149,1469,797,634
Events in quadrant D49,097,9789,441,081

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01830
B01830
C01830
D01830

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02429050
B02516970
C02346000
D03214710

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022700
B022700
C022700
D022700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11150523582.114703%
B11150517161.538944%
C11150514281.280660%
D11150574596.689386%

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 129635 111506 374 374 0.29% 0.34%
B 129635 111506 30 30 0.02% 0.03%
C 129635 111504 0 0 0.00% 0.00%
D 129634 111503 1953 1953 1.51% 1.75%

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 3 64 2439400 1911.45 5906 5816 1273.2
A 14 237 1001427 782.0 5906 5816 1273.2
A 15 174 497624 386.29 5906 5816 1273.2
B 7 220 2033584 1843.85 5944 5814 1099.7
B 4 216 582529 524.41 5944 5814 1099.7
B 15 35 545141 490.41 5944 5814 1099.7
C 3 233 1541861 1153.73 5703 5693 1331.5
C 5 218 446518 331.08 5703 5693 1331.5
C 5 219 78573 54.74 5703 5693 1331.5
D 11 176 13023307 9581.68 5743 5542 1358.6
D 13 189 4493032 3303.0 5743 5542 1358.6
D 13 232 2671744 1962.45 5743 5542 1358.6

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