ASTROSAT CZTI

Data Quality Report

Orbit 11194

Creation date: 2024-06-27T16:09:35.839288
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/AS1A04_171T01_9000001634_11194cztM0_level2.evt modeM0/AS1A04_171T01_9000001634_11194cztM0_level2_quad_clean.evt
Size (bytes)665,314,56076,806,720
Size634.5 MB 73.2 MB
Events in quadrant A6,176,118438,487
Events in quadrant B4,785,335457,846
Events in quadrant C3,517,052463,451
Events in quadrant D5,150,255431,161

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01582
B01582
C01582
D01584

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024028651
B019781612
C016560655
D020872648

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76847279.461218%
B76844806.246746%
C76771371.784551%
D76865266.843612%

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 8034 7715 344 344 4.28% 4.46%
B 8020 7719 177 177 2.21% 2.29%
C 8012 7712 0 0 0.00% 0.00%
D 8018 7719 304 304 3.79% 3.94%

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 8 5 2362322 12947.6 884 864 182.4
A 8 15 310622 1698.37 884 864 182.4
A 15 174 70479 381.69 884 864 182.4
B 4 239 1018313 5774.11 902 877 176.2
B 4 80 85994 483.05 902 877 176.2
B 11 51 72767 407.99 902 877 176.2
C 8 128 11107 48.77 895 898 209.3
C 13 61 6533 26.92 895 898 209.3
C 8 112 6523 26.87 895 898 209.3
D 10 253 498622 2366.95 867 841 210.3
D 1 52 412961 1959.63 867 841 210.3
D 2 14 404672 1920.22 867 841 210.3

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