ASTROSAT CZTI

Data Quality Report

Orbit 20170219_A02_024T01_9000001044_level2

Creation date: 2017-09-23T05:15:01.509788
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/AS1A02_024T01_9000001044cztM0_level2.evt modeM0/AS1A02_024T01_9000001044cztM0_level2_quad_clean.evt
Size (bytes)475,672,32084,288,960
Size453.6 MB 80.4 MB
Events in quadrant A3,219,243522,132
Events in quadrant B3,376,189529,531
Events in quadrant C3,486,453524,898
Events in quadrant D3,867,397507,613

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140200
B0143860
C0146250
D0161180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6713851.266200%
B67131221.817369%
C67131091.623715%
D67131502.234470%

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 8843 6715 1 1 0.01% 0.01%
B 8843 6715 0 0 0.00% 0.00%
C 8843 6715 42 42 0.47% 0.63%
D 8843 6715 55 55 0.62% 0.82%

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 15 239 21178 119.78 829 812 170.0
A 0 226 7818 41.2 829 812 170.0
A 12 194 7371 38.58 829 812 170.0
B 0 214 57809 355.48 835 813 160.3
B 0 219 16976 100.81 835 813 160.3
B 12 111 16030 94.91 835 813 160.3
C 8 229 158658 833.98 809 816 189.3
C 9 68 158564 833.49 809 816 189.3
C 10 22 8144 38.72 809 816 189.3
D 2 152 452571 2260.68 808 783 199.8
D 5 233 146323 728.26 808 783 199.8
D 12 233 98905 490.99 808 783 199.8

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