ASTROSAT CZTI

Data Quality Report

Orbit 41969

Creation date: 2024-06-27T22:35:05.949657
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/AS1A12_025T15_9000005726_41969cztM0_level2.fits modeM0/AS1A12_025T15_9000005726_41969cztM0_level2_quad_clean.evt
Size (bytes)312,096,96087,134,400
Size297.6 MB 83.1 MB
Events in quadrant A2,868,741596,358
Events in quadrant B2,580,164614,591
Events in quadrant C2,474,310573,615
Events in quadrant D3,240,582504,064

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 7083 4991 6 6 0.08% 0.12%
B 7083 4991 4 4 0.06% 0.08%
C 7083 4991 3 3 0.04% 0.06%
D 7083 4991 260 260 3.67% 5.21%

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 534452 4478.7 584 573 119.2
A 14 250 50378 417.81 584 573 119.2
A 2 79 14855 119.81 584 573 119.2
B 0 190 279907 2478.2 577 561 112.7
B 5 255 28422 247.17 577 561 112.7
B 12 111 13778 117.25 577 561 112.7
C 15 214 223497 1697.51 563 568 131.3
C 8 79 26040 193.96 563 568 131.3
C 15 111 21935 162.7 563 568 131.3
D 13 249 493317 3627.33 551 535 135.9
D 10 199 427153 3140.3 551 535 135.9
D 2 249 111031 813.35 551 535 135.9

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