ASTROSAT CZTI

Data Quality Report

Orbit 20160702_G05_167T01_9000000528_level2

Creation date: 2016-09-06T17:48:38.783048
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_167T01_9000000528cztM0_level2_bc.evt modeM0/AS1G05_167T01_9000000528cztM0_level2_quad_clean.evt
Size (bytes)1,220,840,640442,581,120
Size1.1 GB 422.1 MB
Events in quadrant A9,068,4422,733,303
Events in quadrant B8,359,2872,732,699
Events in quadrant C7,573,4382,714,300
Events in quadrant D9,374,6272,612,530

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07720
B07720
C07720
D07740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0837760
B0800100
C0788690
D0844500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A380337782.045592%
B380347662.013987%
C380324911.291018%
D380358432.216380%

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 40618 38040 8 8 0.02% 0.02%
B 40618 38041 0 0 0.00% 0.00%
C 40618 38040 0 0 0.00% 0.00%
D 40618 38043 67 67 0.16% 0.18%

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 0 199 1319223 3085.93 1873 1828 426.9
A 0 50 111838 257.69 1873 1828 426.9
A 0 226 109916 253.19 1873 1828 426.9
B 15 204 622886 1677.01 1896 1850 370.3
B 14 167 176195 470.79 1896 1850 370.3
B 7 252 82871 218.78 1896 1850 370.3
C 9 144 125694 298.65 1852 1833 414.7
C 14 234 91540 216.3 1852 1833 414.7
C 10 65 38060 87.35 1852 1833 414.7
D 13 239 640811 1450.74 1847 1778 440.5
D 2 37 594674 1346.0 1847 1778 440.5
D 13 46 462087 1045.0 1847 1778 440.5

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