ASTROSAT CZTI

Data Quality Report

Orbit 17918

Creation date: 2024-06-27T17:42:34.855310
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/AS1A05_096T06_9000002668_17918cztM0_level2.evt modeM0/AS1A05_096T06_9000002668_17918cztM0_level2_quad_clean.evt
Size (bytes)459,564,480126,933,120
Size438.3 MB 121.1 MB
Events in quadrant A3,308,584879,042
Events in quadrant B3,504,856899,129
Events in quadrant C3,027,900836,493
Events in quadrant D3,660,788802,391

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138971
B0144441
C0130231
D0152161

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61261111.811949%
B61261141.860921%
C6126560.914136%
D61262844.635978%

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 7416 6127 38 38 0.51% 0.62%
B 7416 6127 33 33 0.44% 0.54%
C 7416 6127 0 0 0.00% 0.00%
D 7416 6127 219 219 2.95% 3.57%

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 15 174 317690 2054.16 770 755 154.3
A 4 2 19388 120.77 770 755 154.3
A 13 210 11563 70.05 770 755 154.3
B 15 222 354282 2438.15 775 758 145.0
B 0 244 30480 204.98 775 758 145.0
B 7 220 20170 133.88 775 758 145.0
C 14 238 115348 683.8 726 730 167.6
C 3 233 65004 383.45 726 730 167.6
C 9 160 9191 50.48 726 730 167.6
D 7 238 630666 3663.87 716 696 171.9
D 5 222 141781 820.54 716 696 171.9
D 7 223 52408 300.75 716 696 171.9

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