ASTROSAT CZTI

Data Quality Report

Orbit 08674

Creation date: 2024-06-27T15:35:45.629222
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/AS1G07_024T01_9000001206_08674cztM0_level2.evt modeM0/AS1G07_024T01_9000001206_08674cztM0_level2_quad_clean.evt
Size (bytes)429,099,840121,285,440
Size409.2 MB 115.7 MB
Events in quadrant A3,072,033790,533
Events in quadrant B3,270,219820,235
Events in quadrant C2,982,623810,848
Events in quadrant D3,203,593773,845

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142112
B0144921
C0140251
D0146971

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68701201.746725%
B68701351.965066%
C6870470.684134%
D6870891.295488%

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 6920 6873 18 18 0.26% 0.26%
B 6920 6873 5 5 0.07% 0.07%
C 6920 6873 0 0 0.00% 0.00%
D 6920 6873 47 47 0.68% 0.68%

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 15 174 38670 243.69 768 748 155.6
A 13 251 30813 193.2 768 748 155.6
A 5 16 26673 166.6 768 748 155.6
B 10 16 62512 415.97 782 762 148.4
B 4 48 46895 310.76 782 762 148.4
B 0 187 32901 216.5 782 762 148.4
C 8 128 9123 47.83 757 758 174.9
C 13 61 5949 29.68 757 758 174.9
C 8 112 5608 27.73 757 758 174.9
D 10 253 129291 704.4 748 722 182.5
D 2 152 96712 525.91 748 722 182.5
D 12 233 53911 291.41 748 722 182.5

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