ASTROSAT CZTI

Data Quality Report

Orbit 14955

Creation date: 2024-06-27T17:01:47.324061
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/AS1T02_056T01_9000002210_14955cztM0_level2.evt modeM0/AS1T02_056T01_9000002210_14955cztM0_level2_quad_clean.evt
Size (bytes)684,411,84089,029,440
Size652.7 MB 84.9 MB
Events in quadrant A3,203,200589,664
Events in quadrant B3,335,042585,149
Events in quadrant C3,077,631572,180
Events in quadrant D10,686,166509,255

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133302
B0138531
C0129841
D0360641

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6294931.477598%
B62941101.747696%
C6294470.746743%
D6294209033.206228%

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 6905 6296 0 0 0.00% 0.00%
B 6905 6296 13 13 0.19% 0.21%
C 6905 6296 0 0 0.00% 0.00%
D 6905 6296 2071 2071 29.99% 32.89%

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 12 189 97906 623.4 765 749 155.9
A 1 162 63552 402.97 765 749 155.9
A 1 178 32573 204.2 765 749 155.9
B 10 246 129566 891.22 756 738 144.6
B 10 16 39363 267.2 756 738 144.6
B 0 230 38346 260.17 756 738 144.6
C 3 233 184724 1074.85 738 741 171.2
C 7 247 11027 60.09 738 741 171.2
C 13 61 5388 27.15 738 741 171.2
D 7 254 7828401 47899.44 682 665 163.4
D 13 249 115772 704.36 682 665 163.4
D 7 38 36596 219.87 682 665 163.4

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