ASTROSAT CZTI

Data Quality Report

Orbit 20220502_C07_001T07_9000005104_level2

Creation date: 2022-05-10T16:34:34.540927
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1C07_001T07_9000005104cztM0_level2.evt modeM0/AS1C07_001T07_9000005104cztM0_level2_quad_clean.evt
Size (bytes)8,900,357,7601,248,724,800
Size8.3 GB 1.2 GB
Events in quadrant A111,633,4007,115,682
Events in quadrant B53,407,8178,389,918
Events in quadrant C45,811,9908,766,332
Events in quadrant D53,408,3358,136,656

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016140
B016140
C016140
D016140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03846440
B02113210
C01834250
D02120190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A788032789535.398399%
B7880351326.512442%
C7880318362.329861%
D7880344775.681256%

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 110529 78823 26980 26980 24.41% 34.23%
B 110529 78823 3724 3724 3.37% 4.72%
C 110529 78823 1487 1487 1.35% 1.89%
D 110529 78823 3688 3688 3.34% 4.68%

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 15 169 78947214 49969.2 7993 7841 1579.8
A 10 83 1501841 945.71 7993 7841 1579.8
A 13 6 165578 99.85 7993 7841 1579.8
B 5 172 15229351 9283.83 8808 8552 1639.5
B 5 255 2471216 1502.09 8808 8552 1639.5
B 15 85 225594 132.38 8808 8552 1639.5
C 0 10 3964447 1964.64 8915 8979 2013.3
C 15 214 3197569 1583.74 8915 8979 2013.3
C 1 23 2439814 1207.37 8915 8979 2013.3
D 13 249 5142937 2457.75 8733 8532 2089.1
D 10 118 5055776 2416.02 8733 8532 2089.1
D 2 249 1807412 861.09 8733 8532 2089.1

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