ASTROSAT CZTI

Data Quality Report

Orbit 20171108_G08_010T01_9000001672_level2

Creation date: 2018-01-08T21:09:55.966839
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/AS1G08_010T01_9000001672cztM0_level2_bc.evt modeM0/AS1G08_010T01_9000001672cztM0_level2_quad_clean.evt
Size (bytes)1,248,603,840483,425,280
Size1.2 GB 461.0 MB
Events in quadrant A7,430,5643,178,653
Events in quadrant B12,132,6813,096,247
Events in quadrant C6,729,8183,094,724
Events in quadrant D9,247,3982,985,269

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0710
B0710
C0710
D0710

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0716410
B0914500
C0689100
D0768820

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06780
B06780
C06780
D06780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A332974671.402529%
B3329720856.261825%
C332972930.879959%
D332977682.306514%

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 40212 33297 6 6 0.01% 0.02%
B 40212 33297 64 64 0.16% 0.19%
C 40212 33298 0 0 0.00% 0.00%
D 40212 33298 91 91 0.23% 0.27%

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 234471 601.11 1778 1746 387.2
A 8 5 117405 298.74 1778 1746 387.2
A 1 162 94835 240.44 1778 1746 387.2
B 4 239 3804934 11526.33 1752 1709 330.0
B 3 64 475566 1436.11 1752 1709 330.0
B 3 189 353086 1064.91 1752 1709 330.0
C 8 128 10830 24.42 1714 1696 374.1
C 13 61 10070 22.38 1714 1696 374.1
C 8 112 7584 15.74 1714 1696 374.1
D 1 52 739562 1841.03 1725 1665 400.8
D 13 152 433631 1077.74 1725 1665 400.8
D 10 253 281580 698.38 1725 1665 400.8

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