ASTROSAT CZTI

Data Quality Report

Orbit 26687

Creation date: 2024-06-27T19:31:47.812674
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/AS1A09_145T01_9000003848_26687cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26687cztM0_level2_quad_clean.evt
Size (bytes)1,853,291,520243,014,400
Size1.7 GB 231.8 MB
Events in quadrant A8,279,9441,689,038
Events in quadrant B18,577,5991,480,893
Events in quadrant C9,485,1291,630,290
Events in quadrant D18,637,3751,382,319

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0353010
B0662470
C0390610
D0670110

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17056820.480769%
B17057403123.632526%
C170583071.799742%
D17057320418.784077%

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 26130 17060 8 8 0.03% 0.05%
B 26131 17060 3123 3123 11.95% 18.31%
C 26131 17062 43 43 0.16% 0.25%
D 26131 17060 2828 2828 10.82% 16.58%

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 13 117709 273.18 2112 2080 423.3
A 13 254 28533 62.5 2112 2080 423.3
A 3 137 19150 40.33 2112 2080 423.3
B 0 189 11093368 31556.69 1865 1825 351.5
B 10 247 72911 202.25 1865 1825 351.5
B 12 111 41880 113.96 1865 1825 351.5
C 1 0 886491 1877.24 2015 2034 471.1
C 14 238 325371 686.27 2015 2034 471.1
C 3 233 162583 340.76 2015 2034 471.1
D 7 80 8553395 18893.11 1855 1805 452.6
D 1 52 2277364 5027.42 1855 1805 452.6
D 2 250 391585 861.14 1855 1805 452.6

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