ASTROSAT CZTI

Data Quality Report

Orbit 22668

Creation date: 2024-06-27T18:44:14.325456
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/AS1A08_007T01_9000003362_22668cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22668cztM0_level2_quad_clean.evt
Size (bytes)567,138,24072,259,200
Size540.9 MB 68.9 MB
Events in quadrant A3,292,835455,665
Events in quadrant B3,523,689457,511
Events in quadrant C3,262,420427,785
Events in quadrant D6,678,938416,053

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134761
B0144871
C0133121
D0241674

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61681101.783398%
B61691412.285622%
C61691552.512563%
D616886814.072633%

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 7468 6169 0 0 0.00% 0.00%
B 7469 6170 3 3 0.04% 0.05%
C 7469 6170 1 1 0.01% 0.02%
D 7468 6169 658 658 8.81% 10.67%

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 13 254 11776 65.3 851 836 167.5
A 0 226 7538 40.01 851 836 167.5
A 12 194 6334 32.82 851 836 167.5
B 0 230 66081 426.42 842 825 153.0
B 0 229 40127 256.82 842 825 153.0
B 0 190 36897 235.72 842 825 153.0
C 14 238 129403 702.94 796 803 182.9
C 0 239 17736 92.56 796 803 182.9
C 10 22 11396 57.9 796 803 182.9
D 1 52 2623085 13783.79 788 768 190.2
D 12 227 580575 3047.66 788 768 190.2
D 12 233 186578 976.68 788 768 190.2

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