ASTROSAT CZTI

Data Quality Report

Orbit 11791

Creation date: 2024-06-27T16:18:20.444520
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/AS1G08_058T09_9000001744_11791cztM0_level2.evt modeM0/AS1G08_058T09_9000001744_11791cztM0_level2_quad_clean.evt
Size (bytes)536,342,40087,580,800
Size511.5 MB 83.5 MB
Events in quadrant A4,215,476547,844
Events in quadrant B4,827,019552,812
Events in quadrant C2,992,167557,235
Events in quadrant D3,756,990529,710

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170343
B0188242
C0135462
D0158272

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6659701.051209%
B66592794.189818%
C6659190.285328%
D66591602.402763%

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 7625 6661 2 2 0.03% 0.03%
B 7625 6661 155 155 2.03% 2.33%
C 7625 6661 0 0 0.00% 0.00%
D 7625 6661 112 112 1.47% 1.68%

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 8 15 869332 5389.24 784 768 161.2
A 1 162 122582 755.83 784 768 161.2
A 1 178 67047 411.25 784 768 161.2
B 10 16 819391 5423.04 781 761 151.0
B 3 64 520445 3442.66 781 761 151.0
B 4 239 257537 1701.02 781 761 151.0
C 13 61 5719 27.85 766 771 177.6
C 1 3 2777 11.29 766 771 177.6
C 3 202 1919 6.46 766 771 177.6
D 9 85 270061 1468.93 759 737 183.3
D 1 52 190359 1034.23 759 737 183.3
D 10 199 139288 755.68 759 737 183.3

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