ASTROSAT CZTI

Data Quality Report

Orbit 42115

Creation date: 2024-06-27T22:37:04.996495
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_044T22_9000005750_42115cztM0_level2.fits modeM0/AS1A12_044T22_9000005750_42115cztM0_level2_quad_clean.evt
Size (bytes)333,898,56077,160,960
Size318.4 MB 73.6 MB
Events in quadrant A4,073,849504,962
Events in quadrant B2,126,921540,622
Events in quadrant C2,296,881516,544
Events in quadrant D3,493,191441,692

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015948869
B010107531
C010297518
D014709930

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0402
B0404
C0392
D0393

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01046
B01055
C01044
D01046

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A47212234.723576%
B4742110.231970%
C4758280.588483%
D47213988.430417%

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 8747 4742 151 151 1.73% 3.18%
B 8777 4767 5 5 0.06% 0.10%
C 8771 4781 22 22 0.25% 0.46%
D 8789 4746 307 307 3.49% 6.47%

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 15 222 1616616 15018.81 522 510 107.6
A 10 83 384043 3564.25 522 510 107.6
A 15 223 45942 422.21 522 510 107.6
B 3 112 25644 241.9 527 512 103.9
B 0 229 18340 171.6 527 512 103.9
B 12 111 13017 120.36 527 512 103.9
C 15 214 195071 1585.91 519 523 122.7
C 8 79 72684 588.24 519 523 122.7
C 12 249 5259 38.61 519 523 122.7
D 13 249 994636 7967.58 501 486 124.8
D 12 233 400061 3202.38 501 486 124.8
D 1 52 80558 641.73 501 486 124.8

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