ASTROSAT CZTI

Data Quality Report

Orbit 20160920_G05_240T01_9000000674_level2

Creation date: 2018-05-17T16:24:28.042441
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_240T01_9000000674cztM0_level2.evt modeM0/AS1G05_240T01_9000000674cztM0_level2_quad_clean.evt
Size (bytes)12,077,962,5602,308,291,200
Size11.2 GB 2.1 GB
Events in quadrant A84,392,06514,517,113
Events in quadrant B88,986,81014,940,120
Events in quadrant C88,663,23614,444,531
Events in quadrant D91,630,21913,724,670

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02610
B02640
C02660
D02650

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A036560
B036620
C036440
D036540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03765070
B03858480
C03861380
D03997780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17952028681.597594%
B17948130921.722745%
C17902718221.017724%
D17943536502.034163%

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 226383 181888 258 258 0.11% 0.14%
B 226383 181881 456 456 0.20% 0.25%
C 226383 181552 8 8 0.00% 0.00%
D 226383 181808 1601 1601 0.71% 0.88%

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 0 247 1379522 320.76 20896 20419 4237.1
A 0 50 1291971 300.1 20896 20419 4237.1
A 13 251 753323 172.97 20896 20419 4237.1
B 10 16 3056261 759.37 21213 20737 3997.4
B 4 48 1424794 351.24 21213 20737 3997.4
B 4 80 920456 225.08 21213 20737 3997.4
C 1 16 8710848 1839.83 20434 20522 4723.4
C 13 61 165622 30.72 20434 20522 4723.4
C 14 67 142344 25.79 20434 20522 4723.4
D 2 234 2792325 561.32 20310 19725 4939.4
D 2 136 2583806 519.11 20310 19725 4939.4
D 8 195 2096108 420.37 20310 19725 4939.4

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