ASTROSAT CZTI

Data Quality Report

Orbit 20151022_P01_161T01_9000000048_level2

Creation date: 2016-09-06T18:00:15.130900
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/AS1P01_161T01_9000000048cztM0_level2_bc.evt modeM0/AS1P01_161T01_9000000048cztM0_level2_quad_clean.evt
Size (bytes)1,012,662,720143,141,760
Size965.8 MB 136.5 MB
Events in quadrant A7,421,706779,887
Events in quadrant B11,959,490717,351
Events in quadrant C3,527,640796,644
Events in quadrant D6,494,380764,502

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0770
B0770
C0770
D0770

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01017680
B01097910
C0760400
D0854940

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18497216111.682976%
B18497363719.662648%
C1849740.021625%
D184975593.022112%

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 27728 18498 138 138 0.50% 0.75%
B 27728 18498 559 559 2.02% 3.02%
C 27728 18498 0 0 0.00% 0.00%
D 27728 18476 98 98 0.35% 0.53%

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 69 3529419 21550.47 811 799 163.7
A 0 238 319824 1948.39 811 799 163.7
A 12 243 202876 1234.15 811 799 163.7
B 2 2 8159438 57763.0 810 790 141.2
B 0 230 93897 659.2 810 790 141.2
B 4 82 59114 412.93 810 790 141.2
C 5 234 43289 242.62 847 837 175.0
C 1 1 29361 163.02 847 837 175.0
C 0 207 19871 108.78 847 837 175.0
D 2 152 432838 2389.15 831 813 180.8
D 7 85 394872 2179.2 831 813 180.8
D 13 7 328679 1813.14 831 813 180.8

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
Veto Counter