ASTROSAT CZTI

Data Quality Report

Orbit 30478

Creation date: 2024-06-27T20:15:45.425478
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/AS1A10_058T03_9000004380_30478cztM0_level2.evt modeM0/AS1A10_058T03_9000004380_30478cztM0_level2_quad_clean.evt
Size (bytes)1,696,561,920222,526,080
Size1.6 GB 212.2 MB
Events in quadrant A8,889,7021,418,979
Events in quadrant B14,335,6491,408,809
Events in quadrant C12,362,0521,339,721
Events in quadrant D14,541,2081,288,862

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0385424
B0566034
C0494724
D0556195

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03820
B03820
C03820
D03820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186071440.773902%
B186073301.773526%
C186074452.391573%
D1860610615.702462%

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 20692 18610 16 16 0.08% 0.09%
B 20692 18610 38 38 0.18% 0.20%
C 20692 18610 32 32 0.15% 0.17%
D 20691 18609 979 979 4.73% 5.26%

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 0 13 171106 377.79 2244 2197 447.1
A 8 192 45261 96.32 2244 2197 447.1
A 13 254 35310 74.06 2244 2197 447.1
B 6 159 5224652 12412.34 2218 2159 420.8
B 0 229 137528 321.73 2218 2159 420.8
B 4 171 101512 236.13 2218 2159 420.8
C 3 233 3134665 6299.01 2129 2144 497.3
C 14 238 348291 696.05 2129 2144 497.3
C 10 22 284009 566.79 2129 2144 497.3
D 13 104 3389710 6722.91 2130 2081 503.9
D 8 195 2009426 3983.67 2130 2081 503.9
D 2 250 548875 1085.14 2130 2081 503.9

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