ASTROSAT CZTI

Data Quality Report

Orbit 13691

Creation date: 2024-06-27T16:44:36.013893
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_070T01_9000002028_13691cztM0_level2.evt modeM0/AS1G08_070T01_9000002028_13691cztM0_level2_quad_clean.evt
Size (bytes)557,326,080105,693,120
Size531.5 MB 100.8 MB
Events in quadrant A3,386,739707,358
Events in quadrant B3,992,370758,036
Events in quadrant C3,551,852692,126
Events in quadrant D5,500,461582,989

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139873
B0159852
C0144972
D0206392

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6602230.348379%
B6602671.014844%
C6602170.257498%
D66024797.255377%

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 7888 6604 0 0 0.00% 0.00%
B 7888 6604 16 16 0.20% 0.24%
C 7888 6604 0 0 0.00% 0.00%
D 7888 6604 413 413 5.24% 6.25%

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 30906 171.68 866 851 175.1
A 1 178 10498 55.11 866 851 175.1
A 1 161 9841 51.35 866 851 175.1
B 0 219 387586 2359.77 879 864 163.9
B 3 64 48622 291.42 879 864 163.9
B 4 48 38942 232.35 879 864 163.9
C 3 233 247356 1264.02 847 854 195.0
C 13 61 6135 27.08 847 854 195.0
C 12 4 3583 13.99 847 854 195.0
D 13 122 1927219 10298.94 784 766 187.1
D 5 222 422767 2256.04 784 766 187.1
D 8 195 122322 649.85 784 766 187.1

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