ASTROSAT CZTI

Data Quality Report

Orbit 23462

Creation date: 2024-06-27T18:54:38.758714
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/AS1A07_100T02_9000003470_23462cztM0_level2.evt modeM0/AS1A07_100T02_9000003470_23462cztM0_level2_quad_clean.evt
Size (bytes)619,531,200101,188,800
Size590.8 MB 96.5 MB
Events in quadrant A3,034,645705,717
Events in quadrant B3,207,803727,776
Events in quadrant C3,183,594703,190
Events in quadrant D8,936,213513,869

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125101
B0130731
C0130621
D0306231

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5906130.220115%
B5906490.829665%
C5906731.236031%
D5906211035.726380%

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 7221 5907 0 0 0.00% 0.00%
B 7221 5907 14 14 0.19% 0.24%
C 7221 5906 0 0 0.00% 0.00%
D 7221 5907 2056 2056 28.47% 34.81%

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 3 1 10209 60.54 784 772 155.9
A 13 254 9843 58.2 784 772 155.9
A 0 226 6756 38.39 784 772 155.9
B 0 183 36855 249.59 784 767 144.6
B 12 17 34436 232.86 784 767 144.6
B 0 229 31617 213.36 784 767 144.6
C 14 238 124492 689.16 779 785 179.5
C 7 247 8481 42.87 779 785 179.5
C 3 233 5501 26.27 779 785 179.5
D 7 238 5456233 34228.63 660 643 159.4
D 1 52 852683 5345.74 660 643 159.4
D 13 104 46860 289.97 660 643 159.4

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