ASTROSAT CZTI

Data Quality Report

Orbit 08869

Creation date: 2024-06-27T15:38:19.330571
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_009T01_9000001234_08869cztM0_level2.evt modeM0/AS1A03_009T01_9000001234_08869cztM0_level2_quad_clean.evt
Size (bytes)461,934,72078,909,120
Size440.5 MB 75.3 MB
Events in quadrant A3,742,462491,187
Events in quadrant B3,021,251503,988
Events in quadrant C2,907,851488,479
Events in quadrant D3,886,907462,657

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153422
B0131071
C0129675
D0154363

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63521131.778967%
B6352440.692695%
C6350370.582677%
D63511852.912927%

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 7412 6352 47 47 0.63% 0.74%
B 7412 6352 2 2 0.03% 0.03%
C 7412 6352 0 0 0.00% 0.00%
D 7412 6352 157 157 2.12% 2.47%

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 8 5 659209 4265.66 760 743 154.4
A 5 16 120228 774.05 760 743 154.4
A 13 164 29512 186.37 760 743 154.4
B 6 51 16341 107.83 763 745 144.6
B 12 111 15187 99.85 763 745 144.6
B 11 111 12215 79.3 763 745 144.6
C 13 61 5754 29.27 744 746 171.1
C 14 67 4429 21.52 744 746 171.1
C 8 222 2496 10.23 744 746 171.1
D 13 105 541583 3052.75 733 712 177.2
D 8 195 323653 1822.72 733 712 177.2
D 1 52 108168 606.49 733 712 177.2

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