ASTROSAT CZTI

Data Quality Report

Orbit 20151129_P01_163T03_9000000186_level2

Creation date: 2017-10-31T19:07:20.525350
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/AS1P01_163T03_9000000186cztM0_level2.evt modeM0/AS1P01_163T03_9000000186cztM0_level2_quad_clean.evt
Size (bytes)11,181,913,9201,029,568,320
Size10.4 GB 981.9 MB
Events in quadrant A83,947,5746,688,875
Events in quadrant B87,821,3316,776,267
Events in quadrant C84,357,2676,577,617
Events in quadrant D77,987,4596,420,550

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014000
B014000
C014000
D014000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02983210
B03098230
C02996770
D02808980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A688966951.008767%
B688947751.124917%
C6889410601.538596%
D688957481.085710%

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 78936 68909 3458 3458 4.38% 5.02%
B 78936 68908 3694 3694 4.68% 5.36%
C 78936 68908 3255 3255 4.12% 4.72%
D 78936 68909 2701 2701 3.42% 3.92%

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 14 170 2572289 506.36 21092 21217 5038.1
A 15 233 253173 46.04 21092 21217 5038.1
A 13 17 111269 17.87 21092 21217 5038.1
B 3 0 1033911 196.64 22089 22172 5145.2
B 7 221 599113 112.13 22089 22172 5145.2
B 5 191 410669 75.51 22089 22172 5145.2
C 15 241 3419334 610.04 20000 20686 5571.2
C 9 83 1836826 325.99 20000 20686 5571.2
C 9 144 419016 71.5 20000 20686 5571.2
D 12 188 3073422 511.26 19378 20077 5972.2
D 1 4 1234931 203.42 19378 20077 5972.2
D 13 171 300487 46.95 19378 20077 5972.2

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