ASTROSAT CZTI

Data Quality Report

Orbit 14344

Creation date: 2024-06-27T16:53:48.396522
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/AS1G08_078T01_9000002110_14344cztM0_level2.evt modeM0/AS1G08_078T01_9000002110_14344cztM0_level2_quad_clean.evt
Size (bytes)1,181,410,560203,788,800
Size1.1 GB 194.3 MB
Events in quadrant A8,412,9421,298,800
Events in quadrant B8,250,9061,312,532
Events in quadrant C8,164,2071,264,891
Events in quadrant D9,895,8821,217,719

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03200
B03200
C03200
D03200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0343584
B0338283
C0331123
D0397393

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A156221170.748944%
B156221871.197030%
C15622700.448086%
D156223762.406862%

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 19509 15626 0 0 0.00% 0.00%
B 19509 15624 27 27 0.14% 0.17%
C 19509 15626 0 0 0.00% 0.00%
D 19509 15625 256 256 1.31% 1.64%

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 12 189 478920 1191.19 2016 1976 400.4
A 8 15 153588 378.66 2016 1976 400.4
A 8 6 19788 44.49 2016 1976 400.4
B 0 229 265485 705.94 1993 1948 373.3
B 0 189 61078 158.39 1993 1948 373.3
B 4 48 49047 126.16 1993 1948 373.3
C 3 233 688722 1563.97 1917 1932 439.1
C 13 61 13943 27.35 1917 1932 439.1
C 10 22 4870 6.69 1917 1932 439.1
D 5 222 1015479 2243.65 1916 1872 451.8
D 12 110 471242 1038.97 1916 1872 451.8
D 2 120 453045 998.69 1916 1872 451.8

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