ASTROSAT CZTI

Data Quality Report

Orbit 38807

Creation date: 2024-06-27T21:56:41.540077
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_025T17_9000005400_38807cztM0_level2.fits modeM0/AS1A12_025T17_9000005400_38807cztM0_level2_quad_clean.evt
Size (bytes)438,361,92089,853,120
Size418.1 MB 85.7 MB
Events in quadrant A3,819,687611,629
Events in quadrant B3,890,153604,819
Events in quadrant C2,628,045614,290
Events in quadrant D5,476,632518,781

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147362
B0150861
C0109561
D0200571

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53071783.354061%
B53074889.195402%
C5307120.226116%
D530754410.250612%

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 7130 5308 143 143 2.01% 2.69%
B 7130 5307 172 172 2.41% 3.24%
C 7130 5308 7 7 0.10% 0.13%
D 7130 5308 585 585 8.20% 11.02%

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 517584 4255.85 598 587 121.5
A 12 16 471160 3873.7 598 587 121.5
A 10 83 408218 3355.57 598 587 121.5
B 5 184 1455127 12806.24 593 578 113.6
B 4 170 33028 285.7 593 578 113.6
B 15 85 18422 157.1 593 578 113.6
C 15 214 235554 1692.15 593 598 138.9
C 0 10 27313 192.4 593 598 138.9
C 1 23 25474 179.16 593 598 138.9
D 12 235 2194040 15800.28 571 557 138.8
D 2 16 602450 4335.6 571 557 138.8
D 5 222 148939 1068.84 571 557 138.8

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