ASTROSAT CZTI

Data Quality Report

Orbit 20160509_G05_246T01_9000000450_level2

Creation date: 2017-10-30T13:01:39.313818
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/AS1G05_246T01_9000000450cztM0_level2.evt modeM0/AS1G05_246T01_9000000450cztM0_level2_quad_clean.evt
Size (bytes)10,581,336,0001,786,950,720
Size9.9 GB 1.7 GB
Events in quadrant A67,548,27311,018,557
Events in quadrant B84,423,43911,271,957
Events in quadrant C84,918,50911,043,940
Events in quadrant D73,577,68610,638,789

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02060
B02090
C02090
D02080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03062150
B03477580
C03551900
D03283100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030090
B030200
C030160
D030080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14818723411.579761%
B14811931372.117892%
C14814538562.602855%
D14815630232.040417%

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 173522 148450 56 56 0.03% 0.04%
B 173522 148390 439 439 0.25% 0.30%
C 173522 148419 1791 1791 1.03% 1.21%
D 173522 148426 1117 1117 0.64% 0.75%

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 0 50 353684 95.64 17241 16850 3521.8
A 0 118 300299 80.48 17241 16850 3521.8
A 0 226 205390 53.54 17241 16850 3521.8
B 15 204 10074874 2983.82 17497 17079 3370.8
B 14 167 2205839 649.33 17497 17079 3370.8
B 3 0 1380968 404.62 17497 17079 3370.8
C 8 208 8313381 2121.62 16799 16893 3910.5
C 14 223 6304603 1607.92 16799 16893 3910.5
C 1 192 1403636 354.62 16799 16893 3910.5
D 13 223 4468997 1096.43 16782 16300 4061.1
D 12 246 2633122 644.37 16782 16300 4061.1
D 13 239 721704 173.7 16782 16300 4061.1

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