ASTROSAT CZTI

Data Quality Report

Orbit 20170325_G06_168T16_9000001112_level2

Creation date: 2017-09-23T13:09:39.903497
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/AS1G06_168T16_9000001112cztM0_level2.evt modeM0/AS1G06_168T16_9000001112cztM0_level2_quad_clean.evt
Size (bytes)505,048,32089,838,720
Size481.7 MB 85.7 MB
Events in quadrant A3,326,281569,729
Events in quadrant B3,401,305583,218
Events in quadrant C3,005,484582,852
Events in quadrant D5,118,601528,985

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144220
B0145570
C0134470
D0197980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6535821.254782%
B65351762.693191%
C6535200.306044%
D653567010.252487%

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 6580 6536 17 17 0.26% 0.26%
B 6580 6536 61 61 0.93% 0.93%
C 6580 6536 0 0 0.00% 0.00%
D 6580 6536 522 522 7.93% 7.99%

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 4 2 422077 2756.06 750 732 152.9
A 13 251 8880 53.3 750 732 152.9
A 15 234 8549 51.13 750 732 152.9
B 4 239 219514 1500.66 757 735 145.8
B 11 51 79635 541.19 757 735 145.8
B 4 81 54558 369.18 757 735 145.8
C 1 16 78792 454.28 743 745 171.8
C 8 128 12866 70.55 743 745 171.8
C 8 112 6633 34.27 743 745 171.8
D 1 52 1535439 8679.18 700 681 176.8
D 4 95 622807 3518.17 700 681 176.8
D 1 83 177550 1000.21 700 681 176.8

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter