ASTROSAT CZTI

Data Quality Report

Orbit 20170706_G07_052T01_9000001362_level2

Creation date: 2017-09-24T09:44:35.805640
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/AS1G07_052T01_9000001362cztM0_level2.evt modeM0/AS1G07_052T01_9000001362cztM0_level2_quad_clean.evt
Size (bytes)1,185,413,760217,198,080
Size1.1 GB 207.1 MB
Events in quadrant A8,615,8611,403,961
Events in quadrant B7,341,2091,430,460
Events in quadrant C7,105,2781,388,865
Events in quadrant D11,818,5411,314,040

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0356750
B0314910
C0311490
D0452170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03060
B03060
C03060
D03060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A150924132.736549%
B150992621.735214%
C151001881.245033%
D15072151310.038482%

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 17824 15110 4 4 0.02% 0.03%
B 17825 15113 4 4 0.02% 0.03%
C 17825 15112 0 0 0.00% 0.00%
D 17824 15109 1008 1008 5.66% 6.67%

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 1 162 580597 1548.04 1855 1821 373.9
A 1 178 313347 833.23 1855 1821 373.9
A 1 161 290751 772.79 1855 1821 373.9
B 10 245 63250 172.75 1861 1819 355.6
B 12 111 41839 112.54 1861 1819 355.6
B 11 111 34184 91.01 1861 1819 355.6
C 13 61 13201 26.95 1819 1827 422.0
C 9 68 8090 14.84 1819 1827 422.0
C 12 4 6553 11.2 1819 1827 422.0
D 1 52 4875369 10753.46 1756 1725 453.2
D 5 113 75119 161.94 1756 1725 453.2
D 2 234 71239 153.38 1756 1725 453.2

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