ASTROSAT CZTI

Data Quality Report

Orbit 20160808_G05_215T01_9000000586_level2

Creation date: 2016-09-06T17:47:48.094560
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/AS1G05_215T01_9000000586cztM0_level2_bc.evt modeM0/AS1G05_215T01_9000000586cztM0_level2_quad_clean.evt
Size (bytes)2,695,599,360406,163,520
Size2.5 GB 387.3 MB
Events in quadrant A7,025,2962,781,786
Events in quadrant B8,099,4902,816,860
Events in quadrant C7,063,2312,753,884
Events in quadrant D56,893,5001,368,065

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07660
B07660
C07660
D07660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0767890
B0786630
C0767790
D02594750

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A374495161.377874%
B374495181.383215%
C374494681.249700%
D374492533567.652007%

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 42779 37452 0 0 0.00% 0.00%
B 42779 37450 0 0 0.00% 0.00%
C 42779 37448 1 1 0.00% 0.00%
D 42779 37332 12533 12533 29.30% 33.57%

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 107544 265.14 1786 1739 399.1
A 13 14 19308 44.03 1786 1739 399.1
A 12 194 15186 33.7 1786 1739 399.1
B 15 204 695969 1949.32 1817 1759 356.1
B 14 167 218119 607.53 1817 1759 356.1
B 0 219 95410 262.97 1817 1759 356.1
C 9 247 66148 161.23 1770 1735 399.5
C 9 68 20034 45.8 1770 1735 399.5
C 4 112 14315 31.49 1770 1735 399.5
D 8 112 49978875 204908.56 1016 970 243.9
D 2 63 1093956 4481.22 1016 970 243.9
D 13 239 526412 2154.3 1016 970 243.9

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