ASTROSAT CZTI

Data Quality Report

Orbit 20170323_G05_246T02_9000001106_level2

Creation date: 2017-09-23T12:14:01.469948
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_246T02_9000001106cztM0_level2.evt modeM0/AS1G05_246T02_9000001106cztM0_level2_quad_clean.evt
Size (bytes)4,341,934,080803,128,320
Size4.0 GB 765.9 MB
Events in quadrant A31,338,4605,062,801
Events in quadrant B31,750,1715,182,184
Events in quadrant C29,015,5625,054,100
Events in quadrant D35,218,3764,785,149

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012520
B012520
C012520
D012520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01357180
B01353910
C01297430
D01492740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6183513322.154120%
B6183515232.463006%
C6183510321.668958%
D6183527844.502305%

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 82254 61846 282 282 0.34% 0.46%
B 82254 61846 304 304 0.37% 0.49%
C 82254 61846 189 189 0.23% 0.31%
D 82254 61846 1771 1771 2.15% 2.86%

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 4 2 2970434 2027.64 7240 7087 1461.5
A 15 79 234611 155.68 7240 7087 1461.5
A 0 128 226602 150.2 7240 7087 1461.5
B 4 239 1405943 1016.47 7306 7131 1376.1
B 10 16 524613 376.04 7306 7131 1376.1
B 11 51 355168 252.91 7306 7131 1376.1
C 4 254 994974 603.17 7104 7126 1637.8
C 1 16 278542 165.72 7104 7126 1637.8
C 13 61 54012 28.63 7104 7126 1637.8
D 13 169 4673993 2604.66 6909 6751 1791.9
D 1 52 2718841 1513.54 6909 6751 1791.9
D 2 136 522012 287.55 6909 6751 1791.9

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