ASTROSAT CZTI

Data Quality Report

Orbit 25350

Creation date: 2024-06-27T19:16:39.951332
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/AS1A09_059T01_9000003706_25350cztM0_level2.evt modeM0/AS1A09_059T01_9000003706_25350cztM0_level2_quad_clean.evt
Size (bytes)584,576,640118,514,880
Size557.5 MB 113.0 MB
Events in quadrant A3,781,718783,098
Events in quadrant B3,992,282787,890
Events in quadrant C4,094,990751,943
Events in quadrant D5,305,357723,186

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164560
B0170210
C0171480
D0210530

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7811811.036999%
B78101351.728553%
C78101692.163892%
D78113464.429650%

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 8386 7814 7 7 0.08% 0.09%
B 8385 7813 0 0 0.00% 0.00%
C 8385 7812 12 12 0.14% 0.15%
D 8386 7813 236 236 2.81% 3.02%

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 8 192 22330 108.4 972 951 197.2
A 13 254 11879 55.41 972 951 197.2
A 3 137 9213 41.89 972 951 197.2
B 3 112 99319 532.01 963 938 184.9
B 5 235 35560 187.22 963 938 184.9
B 0 229 29203 152.85 963 938 184.9
C 7 87 150023 678.64 934 940 219.7
C 14 238 146097 660.77 934 940 219.7
C 9 54 132753 600.03 934 940 219.7
D 1 52 793173 3507.72 930 901 225.9
D 12 233 340172 1502.09 930 901 225.9
D 9 35 255739 1128.27 930 901 225.9

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