ASTROSAT CZTI

Data Quality Report

Orbit 28883

Creation date: 2024-06-27T19:57:54.913658
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/AS1A10_115T03_9000004142_28883cztM0_level2.evt modeM0/AS1A10_115T03_9000004142_28883cztM0_level2_quad_clean.evt
Size (bytes)803,485,44082,100,160
Size766.3 MB 78.3 MB
Events in quadrant A3,475,338515,024
Events in quadrant B3,836,062519,388
Events in quadrant C4,196,237494,686
Events in quadrant D12,332,279447,315

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150461
B0160421
C0170631
D0417341

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7313821.121291%
B73131712.338302%
C73133044.156981%
D7313240832.927663%

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 7643 7313 4 4 0.05% 0.05%
B 7643 7313 64 64 0.84% 0.88%
C 7643 7313 28 28 0.37% 0.38%
D 7643 7313 2422 2422 31.69% 33.12%

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 96 36029 198.25 883 863 177.4
A 14 235 17219 92.21 883 863 177.4
A 13 254 13439 70.9 883 863 177.4
B 10 245 370675 2195.37 871 847 168.5
B 12 111 20817 118.55 871 847 168.5
B 11 111 18967 107.56 871 847 168.5
C 3 233 456094 2354.44 830 833 193.4
C 14 238 187301 964.34 830 833 193.4
C 15 208 176557 908.78 830 833 193.4
D 8 195 6506810 34514.92 777 753 188.5
D 1 52 2653668 14073.83 777 753 188.5
D 12 233 142409 751.49 777 753 188.5

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