ASTROSAT CZTI

Data Quality Report

Orbit 31699

Creation date: 2024-06-27T20:31:40.465431
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/AS1T04_034T01_9000004632_31699cztM0_level2.evt modeM0/AS1T04_034T01_9000004632_31699cztM0_level2_quad_clean.evt
Size (bytes)596,468,16072,843,840
Size568.8 MB 69.5 MB
Events in quadrant A3,516,765458,757
Events in quadrant B6,357,170461,442
Events in quadrant C3,757,143444,328
Events in quadrant D4,045,674440,646

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142831
B0228065
C0149871
D0160141

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57281422.479050%
B5728111619.483240%
C57282273.962989%
D5728881.536313%

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 7033 5729 36 36 0.51% 0.63%
B 7033 5729 866 866 12.31% 15.12%
C 7033 5729 62 62 0.88% 1.08%
D 7033 5729 21 21 0.30% 0.37%

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 0 13 345599 2128.66 819 808 162.0
A 13 254 10703 61.09 819 808 162.0
A 3 137 7515 41.41 819 808 162.0
B 4 80 1840854 13905.77 709 695 132.3
B 6 159 1450832 10958.44 709 695 132.3
B 5 172 205840 1550.25 709 695 132.3
C 10 22 320401 1733.98 795 803 184.3
C 14 238 129525 698.38 795 803 184.3
C 0 207 95776 515.28 795 803 184.3
D 8 195 647233 3437.14 804 787 188.1
D 12 227 196387 1040.0 804 787 188.1
D 12 233 63272 332.23 804 787 188.1

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