ASTROSAT CZTI

Data Quality Report

Orbit 12536

Creation date: 2024-06-27T16:28:50.059031
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/AS1A04_130T01_9000001856_12536cztM0_level2.evt modeM0/AS1A04_130T01_9000001856_12536cztM0_level2_quad_clean.evt
Size (bytes)432,711,36063,429,120
Size412.7 MB 60.5 MB
Events in quadrant A3,374,247371,646
Events in quadrant B3,280,806375,594
Events in quadrant C2,983,271374,170
Events in quadrant D3,036,801357,984

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138682
B0135831
C0129581
D0133551

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6328530.837547%
B6328691.090392%
C6328220.347661%
D6328330.521492%

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 7554 6331 0 0 0.00% 0.00%
B 7554 6331 15 15 0.20% 0.24%
C 7554 6331 0 0 0.00% 0.00%
D 7554 6331 8 8 0.11% 0.13%

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 1 162 144880 914.8 775 758 157.5
A 1 178 84042 528.64 775 758 157.5
A 1 161 70862 444.98 775 758 157.5
B 4 239 163346 1100.76 781 762 147.7
B 0 214 32716 216.34 781 762 147.7
B 0 205 24324 159.52 781 762 147.7
C 13 61 5573 27.22 763 768 176.5
C 14 234 4584 21.62 763 768 176.5
C 8 222 2776 11.38 763 768 176.5
D 1 52 71501 388.01 754 734 182.4
D 8 195 44833 241.79 754 734 182.4
D 13 249 28980 154.87 754 734 182.4

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