ASTROSAT CZTI

Data Quality Report

Orbit 26155

Creation date: 2024-06-27T19:25:27.889516
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/AS1A09_138T04_9000003776_26155cztM0_level2.evt modeM0/AS1A09_138T04_9000003776_26155cztM0_level2_quad_clean.evt
Size (bytes)617,270,400114,053,760
Size588.7 MB 108.8 MB
Events in quadrant A7,412,444710,645
Events in quadrant B3,340,211794,703
Events in quadrant C3,483,520768,582
Events in quadrant D4,043,037751,717

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0261930
B0137210
C0142270
D0160730

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6139119519.465711%
B6139390.635283%
C6139801.303144%
D6139781.270565%

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 7504 6140 1176 1176 15.67% 19.15%
B 7504 6139 2 2 0.03% 0.03%
C 7504 6139 0 0 0.00% 0.00%
D 7504 6139 45 45 0.60% 0.73%

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 13 4293650 26926.0 810 797 159.4
A 13 254 8808 50.25 810 797 159.4
A 0 226 6918 38.39 810 797 159.4
B 0 230 20441 125.59 846 825 156.2
B 12 111 18113 110.69 846 825 156.2
B 11 111 16222 98.58 846 825 156.2
C 14 238 134289 688.75 838 848 193.7
C 3 233 52781 268.05 838 848 193.7
C 2 16 29078 145.71 838 848 193.7
D 1 52 605465 3069.19 840 823 197.0
D 12 233 252081 1275.4 840 823 197.0
D 2 234 22873 111.93 840 823 197.0

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