ASTROSAT CZTI

Data Quality Report

Orbit 20160316_T01_051T01_9000000376_level2

Creation date: 2017-11-02T11:52:56.068671
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_051T01_9000000376cztM0_level2.evt modeM0/AS1T01_051T01_9000000376cztM0_level2_quad_clean.evt
Size (bytes)425,894,40084,222,720
Size406.2 MB 80.3 MB
Events in quadrant A2,532,056527,630
Events in quadrant B2,591,465544,612
Events in quadrant C2,686,647555,275
Events in quadrant D4,680,146504,146

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120860
B0121460
C0121730
D0182760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A599590.150125%
B5995100.166806%
C5995130.216847%
D599561610.275229%

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 6805 5996 1 1 0.01% 0.02%
B 6805 5996 0 0 0.00% 0.00%
C 6805 5996 0 0 0.00% 0.00%
D 6805 5996 511 511 7.51% 8.52%

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 0 199 10477 73.1 655 639 134.6
A 0 226 7905 53.99 655 639 134.6
A 12 194 7289 49.41 655 639 134.6
B 12 111 9921 72.86 666 648 127.3
B 15 85 9171 66.97 666 648 127.3
B 11 111 8343 60.46 666 648 127.3
C 2 53 37343 243.29 648 648 150.8
C 8 112 29509 191.35 648 648 150.8
C 7 220 29346 190.27 648 648 150.8
D 11 130 1711106 11823.63 609 592 144.7
D 2 136 340428 2349.06 609 592 144.7
D 11 131 277635 1915.01 609 592 144.7

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