ASTROSAT CZTI

Data Quality Report

Orbit 20170102_G06_135T03_9000000944_level2

Creation date: 2017-09-22T18:02:52.072879
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/AS1G06_135T03_9000000944cztM0_level2.evt modeM0/AS1G06_135T03_9000000944cztM0_level2_quad_clean.evt
Size (bytes)1,108,667,520209,160,000
Size1.0 GB 199.5 MB
Events in quadrant A8,006,6641,318,184
Events in quadrant B7,815,7301,338,675
Events in quadrant C7,544,6871,316,999
Events in quadrant D9,121,7581,252,646

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03280
B03280
C03280
D03280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0347840
B0344990
C0339690
D0386700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A160671550.964710%
B160672871.786270%
C160671460.908695%
D160674652.894131%

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 16767 16073 1 1 0.01% 0.01%
B 16767 16073 32 32 0.19% 0.20%
C 16767 16073 25 25 0.15% 0.16%
D 16767 16073 238 238 1.42% 1.48%

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 8 15 542441 1433.16 1872 1829 377.2
A 15 239 223149 586.72 1872 1829 377.2
A 13 251 18162 43.3 1872 1829 377.2
B 0 228 347673 974.64 1881 1832 354.8
B 15 204 40131 107.93 1881 1832 354.8
B 0 219 37679 101.02 1881 1832 354.8
C 10 22 265542 628.22 1819 1825 419.8
C 9 247 121506 285.1 1819 1825 419.8
C 9 68 22883 50.16 1819 1825 419.8
D 2 33 654713 1492.23 1792 1732 437.6
D 2 216 498020 1134.15 1792 1732 437.6
D 14 34 431076 981.16 1792 1732 437.6

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