ASTROSAT CZTI

Data Quality Report

Orbit 48572

Creation date: 2024-09-21T01:07:41.307168
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_037T01_9000006436_48572cztM0_level2.fits modeM0/AS1A13_037T01_9000006436_48572cztM0_level2_quad_clean.evt
Size (bytes)435,349,440103,752,000
Size415.2 MB 98.9 MB
Events in quadrant A6,763,968674,799
Events in quadrant B2,933,944708,255
Events in quadrant C2,723,136679,652
Events in quadrant D3,177,106614,900

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246491
B0138141
C0134711
D0144991

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66561792.689303%
B6656580.871394%
C6656350.525841%
D6657681.021481%

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 7491 6657 39 39 0.52% 0.59%
B 7491 6657 17 17 0.23% 0.26%
C 7491 6657 0 0 0.00% 0.00%
D 7492 6658 26 26 0.35% 0.39%

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 3970130 27081.5 694 678 146.6
A 0 31 89332 604.84 694 678 146.6
A 13 254 12861 83.11 694 678 146.6
B 5 255 129182 927.28 696 673 138.6
B 0 183 22655 158.61 696 673 138.6
B 12 16 22145 154.93 696 673 138.6
C 3 233 7914 43.48 694 697 166.0
C 12 250 7836 43.01 694 697 166.0
C 13 61 4812 24.79 694 697 166.0
D 2 165 269392 1563.22 688 665 171.9
D 2 249 84405 487.13 688 665 171.9
D 13 171 62692 360.82 688 665 171.9

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