ASTROSAT CZTI

Data Quality Report

Orbit 20170802_G07_074T01_9000001426_level2

Creation date: 2017-09-24T13:33:28.838219
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/AS1G07_074T01_9000001426cztM0_level2.evt modeM0/AS1G07_074T01_9000001426cztM0_level2_quad_clean.evt
Size (bytes)6,352,421,760956,868,480
Size5.9 GB 912.5 MB
Events in quadrant A53,314,5955,810,299
Events in quadrant B41,846,3296,099,803
Events in quadrant C34,447,0166,128,241
Events in quadrant D57,551,9255,625,255

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015820
B015940
C015840
D015860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02113150
B01769110
C01590530
D02240750

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01270
B01260
C01270
D01270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7723464488.348655%
B7766817182.211979%
C777656430.826850%
D7728353326.899318%

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 92741 78551 4496 4496 4.85% 5.72%
B 92741 79015 683 683 0.74% 0.86%
C 92741 79067 16 16 0.02% 0.02%
D 92741 78646 4583 4583 4.94% 5.83%

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 13 251 16429382 9250.62 8767 8576 1775.1
A 14 111 1921418 1077.59 8767 8576 1775.1
A 15 174 718164 399.74 8767 8576 1775.1
B 0 85 2009378 1168.37 9064 8862 1712.2
B 4 239 1631732 947.81 9064 8862 1712.2
B 11 51 763640 440.82 9064 8862 1712.2
C 13 61 66179 28.39 8776 8806 2020.8
C 14 234 59136 24.91 8776 8806 2020.8
C 14 67 43533 17.19 8776 8806 2020.8
D 1 52 12992280 5937.22 8403 8182 2186.9
D 2 16 5616900 2564.69 8403 8182 2186.9
D 8 195 3146184 1434.91 8403 8182 2186.9

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