ASTROSAT CZTI

Data Quality Report

Orbit 48023

Creation date: 2024-08-14T23:42:44.006602
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_053T01_9000006388_48023cztM0_level2.fits modeM0/AS1A13_053T01_9000006388_48023cztM0_level2_quad_clean.evt
Size (bytes)487,465,920102,021,120
Size464.9 MB 97.3 MB
Events in quadrant A6,808,890667,734
Events in quadrant B4,428,031670,708
Events in quadrant C3,033,605675,676
Events in quadrant D3,273,911624,387

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0244641
B0176391
C0137691
D0144851

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64452734.235842%
B64444396.812539%
C6445871.349884%
D6445781.210240%

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 7415 6446 33 33 0.45% 0.51%
B 7414 6445 269 269 3.63% 4.17%
C 7415 6446 37 37 0.50% 0.57%
D 7415 6446 29 29 0.39% 0.45%

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 4072316 28111.88 697 681 144.8
A 7 3 18130 120.47 697 681 144.8
A 13 254 10750 69.52 697 681 144.8
B 5 255 1322089 9841.84 688 668 134.3
B 0 200 258483 1920.19 688 668 134.3
B 0 246 31158 227.09 688 668 134.3
C 12 2 228678 1412.86 688 691 161.4
C 14 67 36165 219.84 688 691 161.4
C 14 254 34237 207.89 688 691 161.4
D 2 249 117072 671.91 690 667 173.2
D 12 2 91128 522.16 690 667 173.2
D 5 222 74524 426.32 690 667 173.2

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