ASTROSAT CZTI

Data Quality Report

Orbit 13729

Creation date: 2024-06-27T16:45:14.898198
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/AS1G08_039T01_9000002036_13729cztM0_level2.evt modeM0/AS1G08_039T01_9000002036_13729cztM0_level2_quad_clean.evt
Size (bytes)278,576,64044,599,680
Size265.7 MB 42.5 MB
Events in quadrant A1,984,932268,828
Events in quadrant B2,114,403287,639
Events in quadrant C1,968,597260,916
Events in quadrant D2,092,990248,099

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A085762
B087872
C084772
D087772

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A40311223.026544%
B40311333.299429%
C4031902.232697%
D4031912.257504%

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 4307 4034 6 6 0.14% 0.15%
B 4307 4034 1 1 0.02% 0.02%
C 4307 4034 0 0 0.00% 0.00%
D 4307 4034 5 5 0.12% 0.12%

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 9 143 51267 485.81 499 487 104.5
A 1 162 6598 58.46 499 487 104.5
A 15 69 4856 41.8 499 487 104.5
B 0 219 79836 802.9 503 491 98.8
B 4 48 20539 202.87 503 491 98.8
B 12 111 11289 109.27 503 491 98.8
C 3 233 73160 632.01 484 487 115.0
C 8 128 4488 34.8 484 487 115.0
C 13 61 3374 25.11 484 487 115.0
D 5 222 76705 634.34 482 467 120.2
D 8 195 75434 623.77 482 467 120.2
D 10 157 42880 352.9 482 467 120.2

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