ASTROSAT CZTI

Data Quality Report

Orbit 20160913_G05_194T01_9000000660_level2

Creation date: 2016-10-20T23:42:18.010879
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_194T01_9000000660cztM0_level2_bc.evt modeM0/AS1G05_194T01_9000000660cztM0_level2_quad_clean.evt
Size (bytes)466,920,000145,166,400
Size445.3 MB 138.4 MB
Events in quadrant A2,950,349838,141
Events in quadrant B3,014,701857,143
Events in quadrant C3,491,961854,232
Events in quadrant D3,650,043807,350

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03100
B03100
C03100
D03100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310570
B0310110
C0319930
D0334240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A150521200.797236%
B15047980.651293%
C15045600.398804%
D150511841.222510%

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 18219 15059 5 5 0.03% 0.03%
B 18219 15058 0 0 0.00% 0.00%
C 18219 15059 0 0 0.00% 0.00%
D 18219 15059 20 20 0.11% 0.13%

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 0 50 128401 787.35 727 708 162.2
A 13 14 13467 78.67 727 708 162.2
A 14 111 8675 49.12 727 708 162.2
B 15 204 57381 395.78 742 721 143.2
B 0 219 27392 186.3 742 721 143.2
B 8 3 23945 162.22 742 721 143.2
C 1 16 626368 3813.6 727 713 164.1
C 14 67 10620 60.39 727 713 164.1
C 12 4 7469 41.18 727 713 164.1
D 2 136 316830 1874.78 719 691 168.6
D 2 33 260881 1542.99 719 691 168.6
D 2 206 74325 436.67 719 691 168.6

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