ASTROSAT CZTI

Data Quality Report

Orbit 38503

Creation date: 2024-06-27T21:53:37.595949
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/AS1A12_018T01_9000005386_38503cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38503cztM0_level2_quad_clean.evt
Size (bytes)451,120,32088,125,120
Size430.2 MB 84.0 MB
Events in quadrant A2,850,728650,446
Events in quadrant B3,728,403646,649
Events in quadrant C2,553,135613,683
Events in quadrant D7,159,378391,257

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116273
B0144632
C0107542
D0248472

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5234170.324799%
B52342725.196790%
C523450.095529%
D5234179534.294994%

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 7117 5235 6 6 0.08% 0.11%
B 7117 5235 160 160 2.25% 3.06%
C 7117 5235 2 2 0.03% 0.04%
D 7117 5235 1754 1754 24.65% 33.51%

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 385491 3131.6 611 600 122.9
A 12 189 72065 581.46 611 600 122.9
A 9 143 19190 151.25 611 600 122.9
B 8 3 1242683 10993.59 596 581 113.0
B 0 183 75965 667.21 596 581 113.0
B 4 170 29997 260.35 596 581 113.0
C 15 214 221808 1647.98 581 583 134.2
C 3 233 19934 144.15 581 583 134.2
C 0 10 15635 112.13 581 583 134.2
D 12 227 2084598 17883.95 481 467 116.5
D 2 250 1756360 15067.33 481 467 116.5
D 10 118 1250180 10723.8 481 467 116.5

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