ASTROSAT CZTI

Data Quality Report

Orbit 20170415_G07_028T01_9000001166_level2

Creation date: 2017-09-23T17:33:57.678322
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_028T01_9000001166cztM0_level2.evt modeM0/AS1G07_028T01_9000001166cztM0_level2_quad_clean.evt
Size (bytes)1,172,482,560236,520,000
Size1.1 GB 225.6 MB
Events in quadrant A7,790,1511,522,940
Events in quadrant B10,126,1941,479,245
Events in quadrant C7,723,6481,525,805
Events in quadrant D8,707,0111,452,047

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0349040
B0416950
C0349220
D0379110

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03500
B03500
C03500
D03500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17168520.302889%
B171677224.205744%
C17169400.232978%
D171682161.258155%

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 19577 17175 0 0 0.00% 0.00%
B 19577 17175 538 538 2.75% 3.13%
C 19577 17175 5 5 0.03% 0.03%
D 19577 17175 143 143 0.73% 0.83%

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 0 226 18794 41.07 2017 1977 409.5
A 12 194 17805 38.66 2017 1977 409.5
A 15 236 11353 22.9 2017 1977 409.5
B 10 16 1733243 4573.19 1983 1937 378.6
B 0 214 253866 665.46 1983 1937 378.6
B 4 81 241589 633.03 1983 1937 378.6
C 1 16 82515 177.9 1958 1969 452.8
C 13 61 14937 28.64 1958 1969 452.8
C 8 208 7146 11.43 1958 1969 452.8
D 11 144 459917 891.56 1931 1896 513.7
D 8 195 206795 398.85 1931 1896 513.7
D 13 169 147172 282.79 1931 1896 513.7

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