ASTROSAT CZTI

Data Quality Report

Orbit 20151126_P01_999T99_9000000136_level2

Creation date: 2016-09-06T17:57:44.446350
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_9000000136cztM0_level2_bc.evt modeM0/AS1P01_999T99_9000000136cztM0_level2_quad_clean.evt
Size (bytes)44,141,76024,992,640
Size42.1 MB 23.8 MB
Events in quadrant A275,935159,664
Events in quadrant B310,296161,733
Events in quadrant C321,043158,705
Events in quadrant D307,624153,893

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A073820
B075560
C068040
D065380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A166330.180397%
B166330.180397%
C166320.120265%
D166310.060132%

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 1662 1662 0 0 0.00% 0.00%
B 1662 1662 0 0 0.00% 0.00%
C 1662 1662 0 0 0.00% 0.00%
D 1662 1662 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 14 170 460 22.8 71 69 17.1
A 10 133 336 15.57 71 69 17.1
A 15 17 248 10.44 71 69 17.1
B 0 220 16110 1011.62 73 70 15.9
B 5 249 2769 170.2 73 70 15.9
B 8 38 2483 152.16 73 70 15.9
C 12 4 32752 1938.31 70 68 16.9
C 15 241 3647 212.25 70 68 16.9
C 3 111 2090 119.91 70 68 16.9
D 13 169 11465 684.46 69 66 16.7
D 13 170 11458 684.04 69 66 16.7
D 1 4 9256 551.82 69 66 16.7

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