ASTROSAT CZTI

Data Quality Report

Orbit 42794

Creation date: 2024-06-27T22:44:18.707892
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/AS1A05_013T01_9000005822_42794cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42794cztM0_level2_quad_clean.evt
Size (bytes)399,790,08082,221,120
Size381.3 MB 78.4 MB
Events in quadrant A2,704,761594,102
Events in quadrant B2,499,624594,633
Events in quadrant C2,754,270575,042
Events in quadrant D6,460,699384,027

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107952
B0105312
C0110162
D0225402

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0280
C0280
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4872110.225780%
B4872861.765189%
C4871390.800657%
D4871155431.903100%

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 7025 4873 4 4 0.06% 0.08%
B 7025 4873 66 66 0.94% 1.35%
C 7024 4872 38 38 0.54% 0.78%
D 7024 4871 1494 1494 21.27% 30.67%

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 10 83 509811 4422.87 565 554 115.1
A 3 137 6063 47.85 565 554 115.1
A 13 254 5496 42.92 565 554 115.1
B 0 229 204647 1892.12 557 542 107.9
B 12 0 41696 381.51 557 542 107.9
B 5 255 28071 255.2 557 542 107.9
C 14 254 388930 3045.87 550 554 127.5
C 15 214 211087 1651.12 550 554 127.5
C 3 233 5906 41.97 550 554 127.5
D 2 249 4502362 39032.5 466 452 115.3
D 1 52 83088 716.47 466 452 115.3
D 5 70 22254 189.03 466 452 115.3

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