ASTROSAT CZTI

Data Quality Report

Orbit 05746

Creation date: 2024-06-27T14:58:37.509135
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/AS1A02_149T01_9000000740_05746cztM0_level2.evt modeM0/AS1A02_149T01_9000000740_05746cztM0_level2_quad_clean.evt
Size (bytes)441,383,04058,392,000
Size420.9 MB 55.7 MB
Events in quadrant A3,294,129334,914
Events in quadrant B3,409,087339,058
Events in quadrant C3,122,729339,059
Events in quadrant D3,119,259321,124

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135163
B0138202
C0130912
D0131852

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62031362.192488%
B6203971.563759%
C6203390.628728%
D6203641.031759%

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 7518 6204 56 56 0.74% 0.90%
B 7518 6204 1 1 0.01% 0.02%
C 7518 6204 2 2 0.03% 0.03%
D 7518 6204 18 18 0.24% 0.29%

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 15 236 166768 1022.88 810 796 162.3
A 14 111 9383 52.92 810 796 162.3
A 0 226 7789 43.1 810 796 162.3
B 15 204 100404 635.38 821 803 156.8
B 4 81 61409 386.62 821 803 156.8
B 11 51 55401 348.29 821 803 156.8
C 9 16 68023 375.05 781 787 179.3
C 13 61 6323 30.88 781 787 179.3
C 8 222 3456 14.89 781 787 179.3
D 2 206 65453 340.46 777 755 190.0
D 11 241 42797 221.23 777 755 190.0
D 2 14 24934 127.24 777 755 190.0

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