ASTROSAT CZTI

Data Quality Report

Orbit 20151126_P01_999T99_9000000160_level2

Creation date: 2016-09-06T17:57:31.323355
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_999T99_9000000160cztM0_level2_bc.evt modeM0/AS1P01_999T99_9000000160cztM0_level2_quad_clean.evt
Size (bytes)40,544,64023,708,160
Size38.7 MB 22.6 MB
Events in quadrant A266,360151,914
Events in quadrant B291,941153,266
Events in quadrant C283,836154,686
Events in quadrant D278,565150,183

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A066800
B069050
C062050
D058880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1450171.172414%
B145070.482759%
C1450120.827586%
D145070.482759%

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 1450 1450 0 0 0.00% 0.00%
B 1450 1450 0 0 0.00% 0.00%
C 1450 1450 0 0 0.00% 0.00%
D 1450 1450 0 0 0.00% 0.00%

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 14 79 5093 312.79 67 66 16.1
A 14 170 815 46.6 67 66 16.1
A 10 83 179 7.03 67 66 16.1
B 8 38 16600 1138.18 69 67 14.5
B 15 22 5777 393.09 69 67 14.5
B 0 220 3781 255.68 69 67 14.5
C 15 241 3842 230.12 67 66 16.4
C 9 83 3020 180.03 67 66 16.4
C 3 111 2834 168.69 67 66 16.4
D 1 4 13863 844.27 66 64 16.3
D 13 170 12810 779.84 66 64 16.3
D 10 125 468 24.72 66 64 16.3

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