ASTROSAT CZTI

Data Quality Report

Orbit 08757

Creation date: 2024-06-27T15:36:48.319777
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/AS1A03_038T01_9000001218_08757cztM0_level2.evt modeM0/AS1A03_038T01_9000001218_08757cztM0_level2_quad_clean.evt
Size (bytes)443,808,000100,546,560
Size423.2 MB 95.9 MB
Events in quadrant A3,250,281654,865
Events in quadrant B3,112,945666,060
Events in quadrant C3,040,962661,945
Events in quadrant D3,615,431629,731

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135732
B0131821
C0129941
D0148041

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61981081.742498%
B6198981.581155%
C6198761.226202%
D61981712.758955%

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 7488 6198 11 11 0.15% 0.18%
B 7488 6198 4 4 0.05% 0.06%
C 7488 6198 0 0 0.00% 0.00%
D 7488 6198 80 80 1.07% 1.29%

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 13 251 84402 527.98 786 772 158.4
A 3 1 56275 350.41 786 772 158.4
A 5 16 51468 320.06 786 772 158.4
B 10 16 27806 181.83 786 768 148.7
B 0 198 19619 126.78 786 768 148.7
B 4 173 15824 101.25 786 768 148.7
C 13 61 5777 27.84 778 783 179.4
C 12 4 3833 17.0 778 783 179.4
C 8 222 2673 10.53 778 783 179.4
D 1 52 529175 2696.33 766 751 196.0
D 2 152 151347 768.43 766 751 196.0
D 2 234 19637 96.37 766 751 196.0

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