ASTROSAT CZTI

Data Quality Report

Orbit 20160309_T01_042T01_9000000366_level2

Creation date: 2017-10-27T02:07:37.422952
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/AS1T01_042T01_9000000366cztM0_level2.evt modeM0/AS1T01_042T01_9000000366cztM0_level2_quad_clean.evt
Size (bytes)8,118,227,5201,378,319,040
Size7.6 GB 1.3 GB
Events in quadrant A60,541,8078,530,011
Events in quadrant B56,239,1608,691,562
Events in quadrant C59,060,3598,449,051
Events in quadrant D62,174,8498,107,369

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01930
B01930
C01930
D01930

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023740
B023740
C023740
D023740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02582560
B02448080
C02546890
D02675670

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11626630632.634476%
B11631215281.313708%
C11628818291.572819%
D11628831112.675255%

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 135758 116293 1276 1276 0.94% 1.10%
B 135758 116339 101 101 0.07% 0.09%
C 135758 116316 678 678 0.50% 0.58%
D 135758 116314 1658 1658 1.22% 1.43%

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 15 236 3455425 1234.49 13732 13431 2788.2
A 8 14 2776502 990.99 13732 13431 2788.2
A 8 15 676426 237.79 13732 13431 2788.2
B 4 200 505940 185.9 13955 13611 2648.4
B 15 85 480688 176.36 13955 13611 2648.4
B 10 244 396728 144.66 13955 13611 2648.4
C 5 234 3428800 1089.66 13376 13434 3134.3
C 2 53 2326990 738.13 13376 13434 3134.3
C 14 223 441903 136.7 13376 13434 3134.3
D 13 53 4598754 1461.36 13218 12926 3138.1
D 7 67 3257810 1034.04 13218 12926 3138.1
D 0 96 893179 280.51 13218 12926 3138.1

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