ASTROSAT CZTI

Data Quality Report

Orbit 20180406_G08_083T03_9000002022_level2

Creation date: 2018-04-09T10:31:11.967747
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/AS1G08_083T03_9000002022cztM0_level2_bc.evt modeM0/AS1G08_083T03_9000002022cztM0_level2_quad_clean.evt
Size (bytes)1,604,289,600605,427,840
Size1.5 GB 577.4 MB
Events in quadrant A10,132,8913,786,835
Events in quadrant B11,103,5473,851,590
Events in quadrant C11,417,6783,766,449
Events in quadrant D12,645,2173,627,005

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09840
B09840
C09840
D09840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0994100
B01025820
C01011650
D01043830

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A481734270.886389%
B481735891.222677%
C481734060.842796%
D481735051.048305%

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 58099 48176 0 0 0.00% 0.00%
B 58099 48176 2 2 0.00% 0.00%
C 58099 48176 0 0 0.00% 0.00%
D 58099 48174 17 17 0.03% 0.04%

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 1 162 45856 76.49 2610 2563 566.0
A 12 96 43511 72.35 2610 2563 566.0
A 15 69 18203 27.63 2610 2563 566.0
B 0 219 454039 918.93 2650 2584 491.3
B 0 214 135257 270.05 2650 2584 491.3
B 3 64 107302 213.15 2650 2584 491.3
C 3 233 1285022 2299.54 2570 2538 557.7
C 14 234 81007 140.7 2570 2538 557.7
C 13 61 15101 22.53 2570 2538 557.7
D 8 195 1484624 2296.39 2552 2488 645.4
D 5 222 470339 724.88 2552 2488 645.4
D 13 249 248054 380.48 2552 2488 645.4

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