ASTROSAT CZTI

Data Quality Report

Orbit 47673

Creation date: 2024-07-22T12:00:11.404326
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/AS1A13_082T01_9000006342_47673cztM0_level2.fits modeM0/AS1A13_082T01_9000006342_47673cztM0_level2_quad_clean.evt
Size (bytes)475,986,240110,980,800
Size453.9 MB 105.8 MB
Events in quadrant A7,452,256716,881
Events in quadrant B3,441,315758,453
Events in quadrant C3,060,980730,478
Events in quadrant D3,126,450670,379

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0268596
B0149032
C0140962
D0144582

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69373595.175148%
B6938480.691842%
C6938230.331508%
D6938280.403575%

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 7803 6939 148 148 1.90% 2.13%
B 7803 6939 8 8 0.10% 0.12%
C 7803 6939 1 1 0.01% 0.01%
D 7803 6939 15 15 0.19% 0.22%

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 3989725 24832.82 767 751 160.6
A 13 248 312527 1940.92 767 751 160.6
A 9 191 152802 946.57 767 751 160.6
B 0 200 180204 1159.22 777 753 154.8
B 0 190 106822 685.19 777 753 154.8
B 15 54 28392 178.54 777 753 154.8
C 14 254 16398 85.22 774 777 183.3
C 3 233 15908 82.55 774 777 183.3
C 10 20 5221 24.24 774 777 183.3
D 5 171 71324 362.38 771 748 194.8
D 2 249 52452 265.48 771 748 194.8
D 2 234 30974 155.2 771 748 194.8

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