ASTROSAT CZTI

Data Quality Report

Orbit 00620

Creation date: 2024-06-27T14:00:40.634793
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/AS1P01_116T01_9000000086_00620cztM0_level2.evt modeM0/AS1P01_116T01_9000000086_00620cztM0_level2_quad_clean.evt
Size (bytes)801,815,04065,969,280
Size764.7 MB 62.9 MB
Events in quadrant A5,994,283412,200
Events in quadrant B6,232,428420,668
Events in quadrant C5,884,696403,384
Events in quadrant D5,821,067392,380

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0215933
B0222932
C0212262
D0210902

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A526860.113895%
B5268240.455581%
C5268621.176917%
D52681062.012149%

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 7423 5269 112 112 1.51% 2.13%
B 7423 5269 124 124 1.67% 2.35%
C 7423 5269 100 100 1.35% 1.90%
D 7423 5269 239 239 3.22% 4.54%

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 13 160 49946 142.44 1517 1498 340.1
A 0 238 27932 77.72 1517 1498 340.1
A 15 171 21854 59.85 1517 1498 340.1
B 7 221 125597 347.64 1546 1553 356.8
B 5 191 91219 251.3 1546 1553 356.8
B 0 220 77944 214.09 1546 1553 356.8
C 9 83 179634 450.48 1434 1489 395.5
C 15 241 55719 137.13 1434 1489 395.5
C 3 159 9724 20.82 1434 1489 395.5
D 1 4 361886 861.46 1340 1393 418.5
D 14 52 157424 372.86 1340 1393 418.5
D 13 221 49370 114.65 1340 1393 418.5

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