ASTROSAT CZTI

Data Quality Report

Orbit 42575

Creation date: 2024-06-27T22:41:48.509914
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/AS1C07_001T10_9000005814_42575cztM0_level2.fits modeM0/AS1C07_001T10_9000005814_42575cztM0_level2_quad_clean.evt
Size (bytes)334,198,08089,357,760
Size318.7 MB 85.2 MB
Events in quadrant A2,878,370614,967
Events in quadrant B3,214,208603,282
Events in quadrant C2,389,287592,752
Events in quadrant D3,488,502534,895

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114872
B0129732
C0103292
D0138412

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0310
C0310
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5141180.350126%
B51412374.609998%
C514130.058354%
D51411803.501264%

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 7173 5142 8 8 0.11% 0.16%
B 7173 5142 221 221 3.08% 4.30%
C 7173 5142 0 0 0.00% 0.00%
D 7173 5142 149 149 2.08% 2.90%

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 10 83 564452 4754.97 581 570 118.6
A 2 79 22211 182.49 581 570 118.6
A 7 3 21634 177.62 581 570 118.6
B 5 172 862850 8025.02 569 554 107.5
B 0 245 58419 538.52 569 554 107.5
B 3 112 19811 179.22 569 554 107.5
C 15 214 215996 1676.73 555 557 128.5
C 7 220 5199 36.13 555 557 128.5
C 13 61 3751 24.86 555 557 128.5
D 1 52 606639 4536.07 552 537 133.6
D 1 47 290449 2169.7 552 537 133.6
D 12 6 173382 1293.57 552 537 133.6

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