ASTROSAT CZTI

Data Quality Report

Orbit 02652

Creation date: 2024-06-27T14:20:36.115783
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/AS1P01_010T01_9000000398_02652cztM0_level2.evt modeM0/AS1P01_010T01_9000000398_02652cztM0_level2_quad_clean.evt
Size (bytes)503,588,160108,529,920
Size480.3 MB 103.5 MB
Events in quadrant A3,045,732713,143
Events in quadrant B3,154,519718,544
Events in quadrant C4,958,602688,810
Events in quadrant D3,620,955677,361

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 7230 7026 0 0 0.00% 0.00%
B 7229 7025 3 3 0.04% 0.04%
C 7229 7025 44 44 0.61% 0.63%
D 7229 7025 74 74 1.02% 1.05%

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 8 15 10978 63.09 786 764 161.9
A 0 226 8772 49.47 786 764 161.9
A 12 194 8635 48.62 786 764 161.9
B 10 244 44940 292.03 794 773 151.2
B 0 191 12700 78.86 794 773 151.2
B 15 186 12607 78.25 794 773 151.2
C 9 70 1940589 10977.47 757 755 176.7
C 8 112 28766 158.51 757 755 176.7
C 8 128 12403 65.91 757 755 176.7
D 2 54 293461 1631.32 755 736 179.4
D 2 255 212720 1181.36 755 736 179.4
D 2 184 86994 480.7 755 736 179.4

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