ASTROSAT CZTI

Data Quality Report

Orbit 43849

Creation date: 2024-06-27T22:56:30.820606
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_087T01_9000005908_43849cztM0_level2.fits modeM0/AS1A13_087T01_9000005908_43849cztM0_level2_quad_clean.evt
Size (bytes)592,724,160113,313,600
Size565.3 MB 108.1 MB
Events in quadrant A5,845,320745,839
Events in quadrant B4,001,594819,941
Events in quadrant C6,468,031736,344
Events in quadrant D5,107,979663,210

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219112
B0161522
C0240772
D0196763

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66866049.033802%
B66871442.153432%
C66874656.953791%
D66866369.512414%

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 8921 6688 448 448 5.02% 6.70%
B 8922 6688 68 68 0.76% 1.02%
C 8922 6687 275 275 3.08% 4.11%
D 8921 6687 623 623 6.98% 9.32%

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 15 223 1727780 10902.91 772 757 158.4
A 10 83 1002529 6324.31 772 757 158.4
A 13 210 66961 417.95 772 757 158.4
B 5 235 484002 3143.28 790 767 153.7
B 4 170 121327 784.2 790 767 153.7
B 0 199 104600 675.4 790 767 153.7
C 3 233 3191273 17467.63 769 774 182.7
C 15 158 69836 378.11 769 774 182.7
C 14 254 60129 324.96 769 774 182.7
D 5 235 1037111 5488.44 746 725 188.8
D 13 249 540226 2857.06 746 725 188.8
D 4 211 231400 1221.6 746 725 188.8

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