ASTROSAT CZTI

Data Quality Report

Orbit 20180826_C03_015T04_9000002328_level2

Creation date: 2018-08-27T10:05:27.661142
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/AS1C03_015T04_9000002328cztM0_level2_bc.evt modeM0/AS1C03_015T04_9000002328cztM0_level2_quad_clean.evt
Size (bytes)604,160,640333,112,320
Size576.2 MB 317.7 MB
Events in quadrant A3,675,2912,252,804
Events in quadrant B3,857,0642,315,110
Events in quadrant C4,259,2832,194,322
Events in quadrant D5,320,8092,136,420

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03520
B03520
C03520
D03520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0356350
B0360400
C0377270
D0410460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17290510.294968%
B17290990.572585%
C172901610.931174%
D172904172.411799%

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 21011 17291 1 1 0.00% 0.01%
B 21011 17292 0 0 0.00% 0.00%
C 21011 17291 0 0 0.00% 0.00%
D 21011 17291 70 70 0.33% 0.40%

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 15 239 57144 285.63 905 889 196.9
A 15 69 56144 280.55 905 889 196.9
A 13 248 45068 224.32 905 889 196.9
B 4 216 71023 399.17 924 903 175.7
B 3 209 53865 301.5 924 903 175.7
B 5 65 43470 242.32 924 903 175.7
C 3 233 854866 4107.06 872 869 207.9
C 7 247 19801 91.05 872 869 207.9
C 10 22 10518 46.4 872 869 207.9
D 1 52 1558445 6901.54 874 850 225.7
D 12 6 108241 475.84 874 850 225.7
D 2 234 74373 325.77 874 850 225.7

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