ASTROSAT CZTI

Data Quality Report

Orbit 09281

Creation date: 2024-06-27T15:43:52.236759
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/AS1G07_077T01_9000001306_09281cztM0_level2.evt modeM0/AS1G07_077T01_9000001306_09281cztM0_level2_quad_clean.evt
Size (bytes)530,628,48089,190,720
Size506.0 MB 85.1 MB
Events in quadrant A4,810,867544,172
Events in quadrant B3,479,643568,324
Events in quadrant C3,233,273569,765
Events in quadrant D4,071,427531,341

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0202241218
B015925912
C015403839
D0183431378

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015410
B015412
C01542
D015412

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69572383.421015%
B70101792.553495%
C7029801.138142%
D69562663.824037%

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 8943 7360 35 35 0.39% 0.48%
B 8943 7360 5 5 0.06% 0.07%
C 8943 7389 0 0 0.00% 0.00%
D 8943 7341 139 139 1.55% 1.89%

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 8 5 1536786 9297.74 814 794 165.2
A 13 251 36538 216.37 814 794 165.2
A 4 2 35841 212.15 814 794 165.2
B 8 234 95163 597.55 834 813 157.9
B 0 214 57884 361.45 834 813 157.9
B 0 245 33383 206.28 834 813 157.9
C 10 22 23706 121.11 817 820 189.0
C 14 67 14264 71.14 817 820 189.0
C 13 61 6356 29.3 817 820 189.0
D 7 71 396072 1994.69 789 766 198.2
D 12 233 312654 1573.77 789 766 198.2
D 1 52 229630 1154.83 789 766 198.2

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