ASTROSAT CZTI

Data Quality Report

Orbit 17197

Creation date: 2024-06-27T17:33:27.916232
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/AS1A05_185T04_9000002548_17197cztM0_level2.evt modeM0/AS1A05_185T04_9000002548_17197cztM0_level2_quad_clean.evt
Size (bytes)491,984,64088,162,560
Size469.2 MB 84.1 MB
Events in quadrant A2,983,454579,336
Events in quadrant B3,149,364589,064
Events in quadrant C4,087,985548,324
Events in quadrant D4,254,543516,415

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129742
B0133242
C0161992
D0169962

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6258240.383509%
B6258470.751039%
C62581562.492809%
D62584026.423778%

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 7473 6259 1 1 0.01% 0.02%
B 7473 6259 2 2 0.03% 0.03%
C 7473 6259 0 0 0.00% 0.00%
D 7473 6259 367 367 4.91% 5.86%

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 4 2 16105 99.3 770 755 154.6
A 12 189 7156 41.41 770 755 154.6
A 0 226 6856 39.47 770 755 154.6
B 0 219 48177 321.41 776 758 147.5
B 0 229 26920 177.33 776 758 147.5
B 12 111 17015 110.19 776 758 147.5
C 3 233 1055224 6125.66 741 747 172.1
C 14 238 115463 666.41 741 747 172.1
C 1 16 28871 163.38 741 747 172.1
D 11 176 710675 4034.6 727 708 176.0
D 7 38 366805 2080.46 727 708 176.0
D 5 222 365454 2072.78 727 708 176.0

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