ASTROSAT CZTI

Data Quality Report

Orbit 12055

Creation date: 2024-06-27T16:21:47.883560
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/AS1A03_085T02_9000001784_12055cztM0_level2.evt modeM0/AS1A03_085T02_9000001784_12055cztM0_level2_quad_clean.evt
Size (bytes)528,223,68098,928,000
Size503.8 MB 94.3 MB
Events in quadrant A3,477,415657,524
Events in quadrant B5,426,515636,457
Events in quadrant C3,087,822640,250
Events in quadrant D3,575,636619,293

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144443
B0206262
C0133752
D0146512

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63401402.208202%
B634069010.883281%
C6340400.630915%
D6340590.930599%

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 7566 6341 11 11 0.15% 0.17%
B 7566 6341 370 370 4.89% 5.84%
C 7566 6341 0 0 0.00% 0.00%
D 7566 6341 12 12 0.16% 0.19%

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 1 162 94071 559.89 835 823 166.5
A 1 178 43476 256.1 835 823 166.5
A 1 161 39089 229.76 835 823 166.5
B 4 239 1199706 7870.93 805 790 152.3
B 0 85 559900 3670.58 805 790 152.3
B 4 206 169093 1104.92 805 790 152.3
C 13 61 5799 27.45 792 798 182.2
C 14 234 1932 6.23 792 798 182.2
C 3 202 1893 6.01 792 798 182.2
D 8 195 255265 1351.49 796 776 188.3
D 1 52 188596 997.44 796 776 188.3
D 10 50 54741 286.59 796 776 188.3

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