ASTROSAT CZTI

Data Quality Report

Orbit 39651

Creation date: 2024-06-27T22:07:19.593279
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_018T01_9000005488_39651cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39651cztM0_level2_quad_clean.evt
Size (bytes)444,818,88086,114,880
Size424.2 MB 82.1 MB
Events in quadrant A3,640,697599,016
Events in quadrant B2,343,926615,785
Events in quadrant C5,614,071502,900
Events in quadrant D4,480,523540,565

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142923
B0103632
C0201252
D0168442

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4981601.204577%
B4981280.562136%
C498192118.490263%
D49811913.834571%

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 7103 4982 46 46 0.65% 0.92%
B 7103 4982 13 13 0.18% 0.26%
C 7103 4982 777 777 10.94% 15.60%
D 7103 4982 171 171 2.41% 3.43%

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 15 222 1039748 9396.55 550 539 110.6
A 10 83 436652 3943.34 550 539 110.6
A 13 6 13391 116.21 550 539 110.6
B 15 32 47413 442.09 553 539 106.0
B 5 255 44574 415.32 553 539 106.0
B 0 230 21109 194.01 553 539 106.0
C 15 208 2073379 17584.32 512 515 117.9
C 9 187 1246638 10570.99 512 515 117.9
C 15 214 195238 1651.86 512 515 117.9
D 12 227 1766776 13544.73 539 524 130.4
D 13 171 190158 1454.23 539 524 130.4
D 12 233 128575 981.98 539 524 130.4

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