ASTROSAT CZTI

Data Quality Report

Orbit 36148

Creation date: 2022-08-10T21:03:31.087904
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_36148cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36148cztM0_level2_quad_clean.evt
Size (bytes)399,844,80054,984,960
Size381.3 MB 52.4 MB
Events in quadrant A2,627,650328,711
Events in quadrant B3,123,064329,998
Events in quadrant C2,761,766325,533
Events in quadrant D3,234,058306,712

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 7189 5338 2 2 0.03% 0.04%
B 7189 5338 41 41 0.57% 0.77%
C 7189 5338 29 29 0.40% 0.54%
D 7189 5338 104 104 1.45% 1.95%

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 176966 1422.59 619 607 124.0
A 8 144 22365 175.51 619 607 124.0
A 9 143 20838 163.19 619 607 124.0
B 5 172 420822 3537.55 615 600 118.8
B 0 213 138818 1163.56 615 600 118.8
B 0 190 56496 470.55 615 600 118.8
C 15 214 228665 1616.07 601 602 141.1
C 0 10 167535 1182.9 601 602 141.1
C 0 207 22215 153.15 601 602 141.1
D 1 52 316811 2146.09 595 577 147.4
D 13 249 308021 2086.44 595 577 147.4
D 2 250 80567 542.84 595 577 147.4

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