ASTROSAT CZTI

Data Quality Report

Orbit 20170809_G07_072T01_9000001452_level2

Creation date: 2017-09-24T14:53:13.206229
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/AS1G07_072T01_9000001452cztM0_level2.evt modeM0/AS1G07_072T01_9000001452cztM0_level2_quad_clean.evt
Size (bytes)2,310,736,320451,647,360
Size2.2 GB 430.7 MB
Events in quadrant A15,347,8342,903,231
Events in quadrant B16,567,7902,937,155
Events in quadrant C15,224,5062,894,789
Events in quadrant D20,666,6502,732,386

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0671410
B0700180
C0674460
D0825490

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0810
B0800
C0800
D0820

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06570
B06580
C06560
D06600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A322234271.325140%
B322275041.563906%
C322393751.163187%
D321017702.398679%

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 86562 32680 0 0 0.00% 0.00%
B 86562 32685 42 42 0.05% 0.13%
C 86562 32690 67 67 0.08% 0.20%
D 86562 32635 385 385 0.44% 1.18%

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 0 226 36967 41.52 3970 3887 796.7
A 8 15 33745 37.48 3970 3887 796.7
A 12 194 33302 36.92 3970 3887 796.7
B 0 214 303721 401.42 3976 3883 746.9
B 4 239 196234 257.52 3976 3883 746.9
B 0 219 195027 255.9 3976 3883 746.9
C 10 22 231724 260.44 3815 3836 875.0
C 14 234 49794 52.52 3815 3836 875.0
C 14 67 32929 33.25 3815 3836 875.0
D 1 52 2940187 2953.95 3755 3678 994.1
D 2 16 693052 693.47 3755 3678 994.1
D 0 11 684970 685.34 3755 3678 994.1

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