ASTROSAT CZTI

Data Quality Report

Orbit 26809

Creation date: 2024-06-27T19:33:12.163058
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/AS1A09_079T01_9000003864_26809cztM0_level2.evt modeM0/AS1A09_079T01_9000003864_26809cztM0_level2_quad_clean.evt
Size (bytes)710,648,640113,129,280
Size677.7 MB 107.9 MB
Events in quadrant A4,634,447766,408
Events in quadrant B9,402,797682,188
Events in quadrant C3,354,721778,824
Events in quadrant D3,711,027765,303

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180940
B0322190
C0136250
D0147650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61981913.081639%
B6198249540.254921%
C61981552.500807%
D61991392.242297%

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 7328 6199 35 35 0.48% 0.56%
B 7328 6199 1958 1958 26.72% 31.59%
C 7328 6199 16 16 0.22% 0.26%
D 7329 6200 77 77 1.05% 1.24%

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 1548686 9740.53 797 780 158.9
A 6 16 11398 66.82 797 780 158.9
A 13 254 9112 52.43 797 780 158.9
B 0 189 6587693 50993.11 688 670 129.2
B 0 229 73761 565.83 688 670 129.2
B 0 190 26929 203.28 688 670 129.2
C 15 208 163432 903.88 783 788 179.9
C 14 238 127209 702.57 783 788 179.9
C 3 233 11614 60.16 783 788 179.9
D 1 52 227684 1205.9 794 774 188.2
D 7 80 205303 1086.96 794 774 188.2
D 2 250 204759 1084.07 794 774 188.2

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