ASTROSAT CZTI

Data Quality Report

Orbit 41385

Creation date: 2024-06-27T22:28:26.529310
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/AS1T05_105T01_9000005662_41385cztM0_level2.fits modeM0/AS1T05_105T01_9000005662_41385cztM0_level2_quad_clean.evt
Size (bytes)389,617,92090,987,840
Size371.6 MB 86.8 MB
Events in quadrant A2,886,014629,473
Events in quadrant B2,469,206645,571
Events in quadrant C3,053,089584,235
Events in quadrant D5,605,821527,898

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118343
B0109142
C0123522
D0203022

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5252150.285605%
B5252150.285605%
C52522514.779132%
D52523967.539985%

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 7046 5253 6 6 0.09% 0.11%
B 7046 5253 5 5 0.07% 0.10%
C 7046 5253 234 234 3.32% 4.45%
D 7046 5253 381 381 5.41% 7.25%

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 508941 4199.89 594 582 121.0
A 9 240 31557 255.91 594 582 121.0
A 12 189 26603 214.98 594 582 121.0
B 0 190 61069 524.55 593 577 115.3
B 5 255 36450 311.07 593 577 115.3
B 0 229 28166 239.23 593 577 115.3
C 0 10 637679 4823.22 562 567 132.1
C 15 214 216616 1635.59 562 567 132.1
C 12 249 8373 59.09 562 567 132.1
D 5 222 1247712 9097.49 556 541 137.1
D 12 79 1045940 7625.67 556 541 137.1
D 1 47 410861 2993.08 556 541 137.1

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