ASTROSAT CZTI

Data Quality Report

Orbit 39084

Creation date: 2024-06-27T22:00:13.056622
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/AS1T05_067T01_9000005432_39084cztM0_level2.fits modeM0/AS1T05_067T01_9000005432_39084cztM0_level2_quad_clean.evt
Size (bytes)390,680,64096,042,240
Size372.6 MB 91.6 MB
Events in quadrant A2,898,536670,655
Events in quadrant B2,808,122684,751
Events in quadrant C4,345,591611,199
Events in quadrant D4,021,526591,517

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117232
B0112891
C0162741
D0156321

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4997220.440264%
B4997410.820492%
C49972775.543326%
D4997330.660396%

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 7060 4998 6 6 0.08% 0.12%
B 7060 4998 12 12 0.17% 0.24%
C 7060 4998 276 276 3.91% 5.52%
D 7060 4998 29 29 0.41% 0.58%

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 397437 3187.8 620 610 124.5
A 13 248 43505 344.58 620 610 124.5
A 7 3 35435 279.75 620 610 124.5
B 5 184 251805 2133.12 613 598 117.8
B 0 230 60299 506.95 613 598 117.8
B 0 190 50853 426.74 613 598 117.8
C 15 208 1837235 13826.32 576 581 132.8
C 15 214 209729 1574.46 576 581 132.8
C 10 20 30914 228.35 576 581 132.8
D 12 235 1386059 9533.72 593 578 145.3
D 2 249 128447 879.89 593 578 145.3
D 12 227 84109 574.79 593 578 145.3

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