ASTROSAT CZTI

Data Quality Report

Orbit 37456

Creation date: 2024-06-27T21:40:12.477502
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_002T01_9000005322_37456cztM0_level2.evt modeM0/AS1A09_002T01_9000005322_37456cztM0_level2_quad_clean.evt
Size (bytes)393,471,36057,456,000
Size375.2 MB 54.8 MB
Events in quadrant A2,471,259360,320
Events in quadrant B2,961,783357,657
Events in quadrant C2,414,674370,543
Events in quadrant D3,762,883334,915

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0101871
B0118561
C0100241
D0143161

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0900
B0900
C0900
D0900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4493671.491209%
B44931433.182729%
C4493471.046072%
D44943758.344459%

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 4493 4493 55 55 1.22% 1.22%
B 4493 4493 79 79 1.76% 1.76%
C 4493 4493 32 32 0.71% 0.71%
D 4494 4494 330 330 7.34% 7.34%

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 13 248 275645 2719.42 496 487 101.2
A 10 83 201476 1986.4 496 487 101.2
A 12 189 26407 256.17 496 487 101.2
B 4 171 719229 7528.76 491 478 95.5
B 0 189 115053 1200.15 491 478 95.5
B 5 172 43600 451.69 491 478 95.5
C 14 254 298063 2630.29 484 488 113.1
C 15 214 189423 1670.01 484 488 113.1
C 0 10 20356 175.61 484 488 113.1
D 2 152 499020 4406.35 464 452 113.1
D 12 227 461201 4072.11 464 452 113.1
D 2 249 416239 3674.73 464 452 113.1

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