ASTROSAT CZTI

Data Quality Report

Orbit 20170223_A02_178T01_9000001048_level2

Creation date: 2017-09-23T05:56:25.939135
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/AS1A02_178T01_9000001048cztM0_level2.evt modeM0/AS1A02_178T01_9000001048cztM0_level2_quad_clean.evt
Size (bytes)6,500,424,960958,227,840
Size6.1 GB 913.8 MB
Events in quadrant A43,654,6215,935,478
Events in quadrant B41,116,8676,026,846
Events in quadrant C61,393,2925,765,110
Events in quadrant D45,149,7285,641,903

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016840
B016840
C016840
D016840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01837990
B01751200
C02369970
D01903100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8245011971.451789%
B8245112711.541522%
C8244743385.261562%
D8245016471.997574%

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 100328 82467 97 97 0.10% 0.12%
B 100328 82469 122 122 0.12% 0.15%
C 100328 82469 2888 2888 2.88% 3.50%
D 100328 82467 697 697 0.69% 0.85%

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 13 251 4597351 2257.19 10113 9901 2032.4
A 0 226 96370 42.55 10113 9901 2032.4
A 12 194 88733 38.79 10113 9901 2032.4
B 0 214 419441 216.46 10142 9913 1891.9
B 4 239 295793 151.11 10142 9913 1891.9
B 4 81 292449 149.34 10142 9913 1891.9
C 9 68 19130467 8602.64 9706 9772 2222.7
C 4 254 3722576 1670.44 9706 9772 2222.7
C 1 16 459351 202.27 9706 9772 2222.7
D 13 104 2252595 931.79 9833 9549 2407.3
D 2 152 2244248 928.32 9833 9549 2407.3
D 2 14 2130223 880.95 9833 9549 2407.3

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