ASTROSAT CZTI

Data Quality Report

Orbit 48246

Creation date: 2024-09-05T17:46:08.616497
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_029T01_9000006422_48246cztM0_level2.fits modeM0/AS1A13_029T01_9000006422_48246cztM0_level2_quad_clean.evt
Size (bytes)564,232,32098,458,560
Size538.1 MB 93.9 MB
Events in quadrant A6,744,455669,281
Events in quadrant B3,487,163702,462
Events in quadrant C2,842,722674,532
Events in quadrant D7,320,236492,572

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0244571
B0145771
C0131161
D0261301

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63373405.365315%
B63381432.256232%
C6337510.804797%
D6337155724.569986%

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 7182 6337 21 21 0.29% 0.33%
B 7183 6338 4 4 0.06% 0.06%
C 7182 6337 5 5 0.07% 0.08%
D 7182 6337 1463 1463 20.37% 23.09%

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 3864514 25462.82 721 708 151.7
A 10 255 37588 243.04 721 708 151.7
A 7 3 30656 197.36 721 708 151.7
B 10 7 276733 1901.35 728 708 145.2
B 0 200 200536 1376.48 728 708 145.2
B 4 21 62829 427.91 728 708 145.2
C 14 254 38662 223.01 715 721 170.1
C 12 2 10691 58.6 715 721 170.1
C 12 249 5682 29.16 715 721 170.1
D 2 165 4170362 24655.81 664 642 169.1
D 12 233 299475 1767.02 664 642 169.1
D 5 32 77869 456.65 664 642 169.1

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