ASTROSAT CZTI

Data Quality Report

Orbit 40253

Creation date: 2024-06-27T22:14:12.427008
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_022T01_9000005536_40253cztM0_level2.fits modeM0/AS1A12_022T01_9000005536_40253cztM0_level2_quad_clean.evt
Size (bytes)348,655,68092,862,720
Size332.5 MB 88.6 MB
Events in quadrant A3,193,739622,826
Events in quadrant B2,801,231639,452
Events in quadrant C2,721,461607,561
Events in quadrant D3,755,034551,319

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129633
B0121082
C0114852
D0149892

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5582550.985310%
B5582550.985310%
C5582190.340380%
D55821913.421713%

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 7254 5583 25 25 0.34% 0.45%
B 7254 5583 31 31 0.43% 0.56%
C 7254 5583 10 10 0.14% 0.18%
D 7254 5583 144 144 1.99% 2.58%

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 501652 3867.9 629 617 129.5
A 13 248 195757 1506.45 629 617 129.5
A 6 10 41122 312.69 629 617 129.5
B 5 255 270702 2247.72 624 606 120.2
B 0 245 50764 417.41 624 606 120.2
B 12 111 15367 122.84 624 606 120.2
C 15 214 239344 1667.89 613 614 143.1
C 14 254 44267 304.98 613 614 143.1
C 0 10 19202 129.87 613 614 143.1
D 12 227 668982 4443.23 610 592 150.4
D 12 0 367364 2438.17 610 592 150.4
D 13 249 109914 726.73 610 592 150.4

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