ASTROSAT CZTI

Data Quality Report

Orbit 07651

Creation date: 2024-06-27T15:22:15.864979
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/AS1G06_124T01_9000001054_07651cztM0_level2.evt modeM0/AS1G06_124T01_9000001054_07651cztM0_level2_quad_clean.evt
Size (bytes)1,825,620,480270,636,480
Size1.7 GB 258.1 MB
Events in quadrant A11,354,3141,646,582
Events in quadrant B11,780,1851,666,500
Events in quadrant C18,717,3781,610,067
Events in quadrant D11,775,7971,579,513

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05040
B05040
C05040
D05040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0507097
B0517006
C0727166
D0527836

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A246242060.836582%
B246242871.165530%
C246248283.362573%
D246242170.881254%

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 26659 24631 1 1 0.00% 0.00%
B 26659 24631 4 4 0.02% 0.02%
C 26659 24631 471 471 1.77% 1.91%
D 26659 24631 94 94 0.35% 0.38%

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 0 226 27777 42.05 2931 2870 592.3
A 13 248 27133 40.96 2931 2870 592.3
A 12 194 26449 39.81 2931 2870 592.3
B 4 81 130382 226.75 2945 2878 562.3
B 4 173 83409 143.21 2945 2878 562.3
B 0 214 75889 129.84 2945 2878 562.3
C 9 68 7612216 11575.14 2829 2843 657.4
C 5 37 31100 42.98 2829 2843 657.4
C 13 61 21542 28.44 2829 2843 657.4
D 13 104 487116 699.14 2848 2759 692.8
D 2 14 181892 258.57 2848 2759 692.8
D 5 81 87005 121.6 2848 2759 692.8

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