ASTROSAT CZTI

Data Quality Report

Orbit 20160907_G05_137T01_9000000646_level2

Creation date: 2016-10-20T15:19:30.644775
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/AS1G05_137T01_9000000646cztM0_level2_bc.evt modeM0/AS1G05_137T01_9000000646cztM0_level2_quad_clean.evt
Size (bytes)1,689,592,320443,566,080
Size1.6 GB 423.0 MB
Events in quadrant A12,197,6552,828,510
Events in quadrant B12,214,3662,813,307
Events in quadrant C7,051,7492,793,073
Events in quadrant D17,195,1102,470,359

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07440
B07440
C07440
D07440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0935120
B0907200
C0756360
D01217980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0710
B0710
C0710
D0710

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3681424446.638779%
B3680116014.350425%
C368104161.130128%
D36800540914.698370%

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 43666 36813 599 599 1.37% 1.63%
B 43666 36814 456 456 1.04% 1.24%
C 43666 36817 0 0 0.00% 0.00%
D 43666 36781 516 516 1.18% 1.40%

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 13 251 4940842 12414.13 1820 1783 397.9
A 15 174 146694 364.23 1820 1783 397.9
A 0 50 88577 218.15 1820 1783 397.9
B 8 3 3369341 9547.69 1844 1794 352.7
B 10 16 881795 2494.98 1844 1794 352.7
B 15 204 261568 736.51 1844 1794 352.7
C 12 4 18362 41.96 1790 1760 395.7
C 1 16 15516 34.77 1790 1760 395.7
C 8 222 13412 29.45 1790 1760 395.7
D 12 22 4378319 10959.08 1692 1625 399.4
D 13 235 1181862 2955.27 1692 1625 399.4
D 13 239 1022886 2557.2 1692 1625 399.4

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