ASTROSAT CZTI

Data Quality Report

Orbit 42298

Creation date: 2024-06-27T22:38:48.118125
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_089T08_9000005790_42298cztM0_level2.fits modeM0/AS1A12_089T08_9000005790_42298cztM0_level2_quad_clean.evt
Size (bytes)353,551,680102,677,760
Size337.2 MB 97.9 MB
Events in quadrant A3,256,560691,539
Events in quadrant B2,991,958712,890
Events in quadrant C2,813,652681,781
Events in quadrant D3,567,697612,380

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131593
B0126402
C0120132
D0144782

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5874160.272387%
B5875300.510638%
C587540.068085%
D58751712.910638%

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 9428 5876 4 4 0.04% 0.07%
B 9429 5877 19 19 0.20% 0.32%
C 9429 5877 1 1 0.01% 0.02%
D 9429 5877 139 139 1.47% 2.37%

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 596492 4303.13 677 666 138.5
A 7 3 15997 110.72 677 666 138.5
A 13 254 9663 64.98 677 666 138.5
B 4 171 179988 1386.61 671 654 129.3
B 5 255 60988 466.5 671 654 129.3
B 3 112 45464 346.47 671 654 129.3
C 15 214 243498 1599.41 654 658 151.8
C 12 249 18576 118.01 654 658 151.8
C 13 61 4492 25.25 654 658 151.8
D 1 52 340903 2147.09 648 629 158.5
D 12 233 226520 1425.35 648 629 158.5
D 12 6 122172 766.92 648 629 158.5

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