ASTROSAT CZTI

Data Quality Report

Orbit 08263

Creation date: 2024-06-27T15:30:17.557785
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/AS1G06_136T01_9000001148_08263cztM0_level2.evt modeM0/AS1G06_136T01_9000001148_08263cztM0_level2_quad_clean.evt
Size (bytes)496,319,04068,794,560
Size473.3 MB 65.6 MB
Events in quadrant A4,273,710392,614
Events in quadrant B3,415,615417,118
Events in quadrant C3,228,662415,047
Events in quadrant D3,667,848400,778

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167463
B0140042
C0136082
D0151122

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65543164.821483%
B6554811.235886%
C6554310.472994%
D65541251.907232%

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 7794 6555 221 221 2.84% 3.37%
B 7794 6554 6 6 0.08% 0.09%
C 7794 6555 0 0 0.00% 0.00%
D 7794 6555 24 24 0.31% 0.37%

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 0 128 995958 5798.4 848 831 171.6
A 13 248 12489 67.93 848 831 171.6
A 0 226 8061 42.13 848 831 171.6
B 10 16 31302 186.93 855 836 163.0
B 0 214 30821 183.98 855 836 163.0
B 11 51 24756 146.77 855 836 163.0
C 13 61 6277 28.5 827 834 191.0
C 12 4 3026 11.48 827 834 191.0
C 3 202 2000 6.11 827 834 191.0
D 2 136 172400 864.87 831 812 198.4
D 1 52 164016 822.61 831 812 198.4
D 2 152 86200 430.39 831 812 198.4

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