ASTROSAT CZTI

Data Quality Report

Orbit 36028

Creation date: 2022-08-09T21:22:28.952999
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/AS1T04_069T01_9000005158_36028cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36028cztM0_level2_quad_clean.evt
Size (bytes)446,927,04053,605,440
Size426.2 MB 51.1 MB
Events in quadrant A2,681,521323,152
Events in quadrant B3,823,631314,559
Events in quadrant C3,423,204314,658
Events in quadrant D3,247,807299,869

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 9176 5292 1 1 0.01% 0.02%
B 9176 5291 189 189 2.06% 3.57%
C 9176 5292 83 83 0.90% 1.57%
D 9176 5292 107 107 1.17% 2.02%

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 10 83 165975 1261.25 648 637 131.1
A 13 254 8205 57.73 648 637 131.1
A 3 137 6546 45.08 648 637 131.1
B 5 236 583811 4818.33 637 620 121.0
B 5 172 251313 2071.23 637 620 121.0
B 5 255 244272 2013.06 637 620 121.0
C 10 49 271242 1872.81 627 631 144.5
C 9 187 233265 1609.99 627 631 144.5
C 15 214 219361 1513.76 627 631 144.5
D 12 17 219748 1444.97 624 608 151.7
D 12 235 152701 1002.87 624 608 151.7
D 10 118 128751 844.95 624 608 151.7

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