ASTROSAT CZTI

Data Quality Report

Orbit 20161006_A02_086T01_9000000714_level2

Creation date: 2017-10-18T06:47:09.174321
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/AS1A02_086T01_9000000714cztM0_level2.evt modeM0/AS1A02_086T01_9000000714cztM0_level2_quad_clean.evt
Size (bytes)4,284,457,920770,025,600
Size4.0 GB 734.4 MB
Events in quadrant A28,753,2294,878,826
Events in quadrant B34,380,7744,906,566
Events in quadrant C26,865,1994,898,797
Events in quadrant D35,790,8844,605,903

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012020
B012020
C012020
D012020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260440
B01405570
C01215470
D01468700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0970
B0970
C0970
D0970

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5879711141.894654%
B5879715522.639590%
C587975600.952430%
D5879720803.537595%

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 72435 58810 276 276 0.38% 0.47%
B 72435 58811 476 476 0.66% 0.81%
C 72435 58811 5 5 0.01% 0.01%
D 72435 58811 1130 1130 1.56% 1.92%

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 15 174 947434 660.51 6999 6852 1424.0
A 0 50 731612 508.95 6999 6852 1424.0
A 0 226 70664 44.81 6999 6852 1424.0
B 15 204 3307264 2456.26 7044 6877 1343.7
B 10 16 1862597 1381.09 7044 6877 1343.7
B 0 219 574506 422.45 7044 6877 1343.7
C 1 16 240280 149.9 6762 6788 1557.6
C 9 16 89252 52.94 6762 6788 1557.6
C 13 61 55086 31.01 6762 6788 1557.6
D 2 63 3453075 2112.43 6717 6509 1631.6
D 2 152 2727011 1667.42 6717 6509 1631.6
D 2 136 1092108 665.37 6717 6509 1631.6

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