ASTROSAT CZTI

Data Quality Report

Orbit 38792

Creation date: 2024-06-27T21:56:28.035093
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/AS1A12_044T04_9000005396_38792cztM0_level2.fits modeM0/AS1A12_044T04_9000005396_38792cztM0_level2_quad_clean.evt
Size (bytes)357,304,32090,354,240
Size340.8 MB 86.2 MB
Events in quadrant A3,150,760614,646
Events in quadrant B3,383,981612,356
Events in quadrant C2,628,192593,920
Events in quadrant D3,645,019539,097

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127923
B0137542
C0112182
D0143672

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5373561.042248%
B53732374.410944%
C5373330.614182%
D53731392.587009%

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 7166 5374 43 43 0.60% 0.80%
B 7166 5374 180 180 2.51% 3.35%
C 7166 5374 28 28 0.39% 0.52%
D 7166 5374 129 129 1.80% 2.40%

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 420745 3466.64 593 580 121.2
A 13 248 336993 2775.63 593 580 121.2
A 12 16 64965 531.22 593 580 121.2
B 4 171 614015 5313.96 591 574 115.4
B 5 200 288521 2494.36 591 574 115.4
B 5 184 48270 413.17 591 574 115.4
C 15 214 238785 1734.83 579 583 137.3
C 0 10 97454 705.51 579 583 137.3
C 15 208 11542 79.81 579 583 137.3
D 2 249 479958 3427.73 568 552 139.9
D 2 16 272083 1941.44 568 552 139.9
D 5 222 240264 1713.93 568 552 139.9

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