ASTROSAT CZTI

Data Quality Report

Orbit 41175

Creation date: 2024-06-27T22:25:32.070718
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_101T04_9000005610_41175cztM0_level2.fits modeM0/AS1A12_101T04_9000005610_41175cztM0_level2_quad_clean.evt
Size (bytes)437,898,24091,310,400
Size417.6 MB 87.1 MB
Events in quadrant A3,236,046646,803
Events in quadrant B4,572,138590,482
Events in quadrant C4,343,210560,741
Events in quadrant D3,604,162558,445

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132343
B0177412
C0167282
D0149992

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5835240.411311%
B583567811.619537%
C583558910.094259%
D58351983.393316%

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 7208 5836 11 11 0.15% 0.19%
B 7208 5836 535 535 7.42% 9.17%
C 7208 5836 504 504 6.99% 8.64%
D 7208 5836 195 195 2.71% 3.34%

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 577939 4413.35 639 626 130.8
A 12 189 133824 1018.25 639 626 130.8
A 10 255 32081 240.46 639 626 130.8
B 0 186 1027959 8690.08 602 585 118.2
B 0 229 475323 4015.59 602 585 118.2
B 0 245 345718 2919.32 602 585 118.2
C 9 54 1411857 10200.35 586 592 138.4
C 0 10 338146 2439.78 586 592 138.4
C 15 214 235982 1701.35 586 592 138.4
D 13 249 815328 5369.74 613 596 151.7
D 2 249 351064 2309.87 613 596 151.7
D 10 34 44562 289.77 613 596 151.7

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