ASTROSAT CZTI

Data Quality Report

Orbit 20171124_A04_037T03_9000001722_level2

Creation date: 2017-11-26T09:54:11.465201
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/AS1A04_037T03_9000001722cztM0_level2_bc.evt modeM0/AS1A04_037T03_9000001722cztM0_level2_quad_clean.evt
Size (bytes)2,319,958,080639,901,440
Size2.2 GB 610.3 MB
Events in quadrant A19,674,0783,849,902
Events in quadrant B17,383,6984,053,100
Events in quadrant C10,817,3894,020,675
Events in quadrant D18,753,4093,800,531

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01552970
B01362060
C01098070
D01348250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010860
B010860
C010860
D010860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0990
B0990
C0990
D0990

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5329438597.240965%
B5329434886.544827%
C532945581.047022%
D5329415682.942170%

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 63170 53295 109 109 0.17% 0.20%
B 63170 53288 441 441 0.70% 0.83%
C 63170 53297 0 0 0.00% 0.00%
D 63170 53297 137 137 0.22% 0.26%

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 8 5 8128691 14116.75 2678 2624 575.6
A 1 162 724660 1254.33 2678 2624 575.6
A 5 112 151402 258.46 2678 2624 575.6
B 3 64 5418791 10627.55 2742 2672 509.6
B 4 239 651041 1272.23 2742 2672 509.6
B 15 204 392106 764.15 2742 2672 509.6
C 13 61 16455 22.81 2767 2730 601.7
C 7 247 8075 8.88 2767 2730 601.7
C 3 202 6833 6.82 2767 2730 601.7
D 8 195 2517142 4083.71 2726 2633 615.7
D 13 152 2502916 4060.6 2726 2633 615.7
D 1 52 1559847 2529.01 2726 2633 615.7

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