ASTROSAT CZTI

Data Quality Report

Orbit 08152

Creation date: 2024-06-27T15:28:44.908630
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_028T01_9000001122_08152cztM0_level2.evt modeM0/AS1G06_028T01_9000001122_08152cztM0_level2_quad_clean.evt
Size (bytes)503,277,12099,455,040
Size480.0 MB 94.8 MB
Events in quadrant A3,535,867625,884
Events in quadrant B3,868,514629,023
Events in quadrant C3,649,265634,982
Events in quadrant D3,686,510608,129

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153883
B0162822
C0156972
D0160402

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7383871.178383%
B73831742.356766%
C7383841.137749%
D73831191.611811%

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 8858 7385 0 0 0.00% 0.00%
B 8858 7385 11 11 0.12% 0.15%
C 8858 7385 0 0 0.00% 0.00%
D 8858 7385 21 21 0.24% 0.28%

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 8523 40.54 915 896 188.1
A 12 194 8089 38.24 915 896 188.1
A 13 254 7478 34.99 915 896 188.1
B 4 173 95423 539.79 917 896 175.1
B 0 219 76746 433.13 917 896 175.1
B 0 214 40244 224.69 917 896 175.1
C 1 16 145633 694.52 896 903 208.4
C 13 61 6653 27.59 896 903 208.4
C 8 128 5382 21.49 896 903 208.4
D 12 233 70872 320.33 893 868 218.5
D 1 52 55335 249.24 893 868 218.5
D 2 152 49323 221.73 893 868 218.5

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