ASTROSAT CZTI

Data Quality Report

Orbit 15731

Creation date: 2024-06-27T17:12:40.550260
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/AS1G08_030T01_9000002326_15731cztM0_level2.evt modeM0/AS1G08_030T01_9000002326_15731cztM0_level2_quad_clean.evt
Size (bytes)453,147,84093,182,400
Size432.2 MB 88.9 MB
Events in quadrant A3,003,723606,674
Events in quadrant B3,160,709618,497
Events in quadrant C3,446,997587,336
Events in quadrant D3,681,417567,036

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131543
B0135002
C0142612
D0153612

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6336380.599747%
B6336470.741793%
C6336811.278409%
D63361542.430556%

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 7512 6338 6 6 0.08% 0.09%
B 7512 6338 3 3 0.04% 0.05%
C 7512 6338 0 0 0.00% 0.00%
D 7512 6338 115 115 1.53% 1.81%

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 15 239 39676 252.61 767 750 154.1
A 15 157 9715 58.18 767 750 154.1
A 0 226 6778 39.12 767 750 154.1
B 4 216 29359 195.14 774 755 146.6
B 3 209 20795 136.72 774 755 146.6
B 5 65 19082 125.03 774 755 146.6
C 3 233 394652 2263.76 744 752 174.0
C 14 238 116445 664.89 744 752 174.0
C 9 54 15587 85.26 744 752 174.0
D 1 52 800597 4121.42 736 719 194.1
D 12 221 46208 234.38 736 719 194.1
D 2 234 24099 120.47 736 719 194.1

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