ASTROSAT CZTI

Data Quality Report

Orbit 17280

Creation date: 2024-06-27T17:34:26.554849
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/AS1T03_059T01_9000002554_17280cztM0_level2.evt modeM0/AS1T03_059T01_9000002554_17280cztM0_level2_quad_clean.evt
Size (bytes)627,488,64094,302,720
Size598.4 MB 89.9 MB
Events in quadrant A6,105,130593,771
Events in quadrant B3,258,739645,146
Events in quadrant C3,256,553602,959
Events in quadrant D5,948,109565,221

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0226082
B0139292
C0139052
D0220832

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A642985613.314668%
B64291121.742106%
C64301352.099533%
D643069010.730949%

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 8714 6430 617 617 7.08% 9.60%
B 8714 6429 0 0 0.00% 0.00%
C 8715 6431 0 0 0.00% 0.00%
D 8715 6431 614 614 7.05% 9.55%

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 14 235 3002937 18639.57 808 790 161.1
A 0 226 7083 39.07 808 790 161.1
A 12 194 5852 31.43 808 790 161.1
B 12 111 19032 115.07 832 811 158.3
B 11 111 16706 100.38 832 811 158.3
B 14 111 14198 84.55 832 811 158.3
C 14 238 124176 673.97 787 794 183.1
C 3 233 54511 293.43 787 794 183.1
C 7 220 8920 44.39 787 794 183.1
D 11 176 2359909 12553.83 778 755 187.9
D 5 222 419210 2226.73 778 755 187.9
D 10 70 184291 976.65 778 755 187.9

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