ASTROSAT CZTI

Data Quality Report

Orbit 20160204_T01_055T01_9000000314_level2

Creation date: 2016-09-06T17:54:03.667068
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_055T01_9000000314cztM0_level2_bc.evt modeM0/AS1T01_055T01_9000000314cztM0_level2_quad_clean.evt
Size (bytes)5,794,758,7202,067,851,520
Size5.4 GB 1.9 GB
Events in quadrant A41,309,39412,227,088
Events in quadrant B40,195,65412,231,620
Events in quadrant C37,305,60312,087,264
Events in quadrant D42,467,40311,800,462

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09068170
B09261820
C08665480
D08381640

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A041720
B041720
C041720
D041720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B1300
C1300
D110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A20855112960.621431%
B20854918270.876053%
C2085547080.339480%
D20856212330.591191%

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 245767 208571 15 15 0.01% 0.01%
B 245767 208565 70 70 0.03% 0.03%
C 245767 208567 10 10 0.00% 0.00%
D 245767 208581 350 350 0.14% 0.17%

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 0 231 3493158 1787.22 9473 9250 1949.3
A 15 175 696522 352.57 9473 9250 1949.3
A 0 128 271546 134.56 9473 9250 1949.3
B 3 0 529417 307.38 9711 9398 1691.8
B 3 32 497290 288.39 9711 9398 1691.8
B 0 190 252365 143.61 9711 9398 1691.8
C 14 223 185306 92.28 9333 9151 1908.9
C 10 34 169627 84.07 9333 9151 1908.9
C 9 191 115872 55.91 9333 9151 1908.9
D 13 88 2917051 1468.35 9296 8991 1980.5
D 2 89 566039 281.27 9296 8991 1980.5
D 10 85 535441 265.82 9296 8991 1980.5

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
Veto Counter