ASTROSAT CZTI

Data Quality Report

Orbit 51929

Creation date: 2025-05-05T03:16:50.083450
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/AS1C09_011T05_9000006466_51929cztM0_level2.fits modeM0/AS1C09_011T05_9000006466_51929cztM0_level2_quad_clean.evt
Size (bytes)951,768,00070,292,160
Size907.7 MB 67.0 MB
Events in quadrant A8,638,111422,635
Events in quadrant B6,231,333560,392
Events in quadrant C7,099,136508,537
Events in quadrant D12,783,889203,324

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0299641
B0227851
C0254581
D0422701

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6202195631.538213%
B6202106017.091261%
C6202118819.155111%
D6203417167.241657%

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 7321 6201 1781 1781 24.33% 28.72%
B 7321 6201 787 787 10.75% 12.69%
C 7322 6203 1073 1073 14.65% 17.30%
D 7322 6202 4065 4065 55.52% 65.54%

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 7 64 2378166 16870.04 560 545 140.9
A 12 3 1322177 9377.43 560 545 140.9
A 4 95 1184363 8399.6 560 545 140.9
B 12 32 2316026 17907.15 606 586 129.3
B 4 206 557629 4308.06 606 586 129.3
B 4 171 225011 1735.66 606 586 129.3
C 15 224 3594732 21506.63 600 594 167.1
C 15 218 320577 1914.72 600 594 167.1
C 13 3 177046 1055.85 600 594 167.1
D 6 42 5093147 46694.02 374 357 109.1
D 12 17 4979965 45656.3 374 357 109.1
D 3 12 280886 2572.07 374 357 109.1

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