ASTROSAT CZTI

Data Quality Report

Orbit 41244

Creation date: 2024-06-27T22:26:26.225933
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_044T17_9000005636_41244cztM0_level2.fits modeM0/AS1A12_044T17_9000005636_41244cztM0_level2_quad_clean.evt
Size (bytes)381,317,76082,316,160
Size363.7 MB 78.5 MB
Events in quadrant A2,814,177591,020
Events in quadrant B4,825,529475,105
Events in quadrant C2,929,138562,863
Events in quadrant D3,164,463519,716

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111993
B0176162
C0117702
D0127402

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4902180.367197%
B4902111422.725418%
C4902711.448388%
D49021332.713178%

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 7025 4903 5 5 0.07% 0.10%
B 7025 4903 1084 1084 15.43% 22.11%
C 7025 4903 66 66 0.94% 1.35%
D 7025 4903 142 142 2.02% 2.90%

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 509898 4475.2 561 551 113.8
A 0 8 77112 672.68 561 551 113.8
A 2 79 16024 135.95 561 551 113.8
B 0 186 2815860 30860.02 475 462 91.2
B 0 245 58921 640.78 475 462 91.2
B 5 255 33716 364.5 475 462 91.2
C 9 54 359524 2915.38 536 540 123.1
C 0 10 226815 1837.62 536 540 123.1
C 15 214 213082 1726.09 536 540 123.1
D 2 249 274195 2074.62 541 526 131.9
D 13 249 241620 1827.68 541 526 131.9
D 1 47 230263 1741.58 541 526 131.9

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