ASTROSAT CZTI

Data Quality Report

Orbit 03909

Creation date: 2024-06-27T14:35:07.444249
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/AS1G05_172T01_9000000502_03909cztM0_level2.evt modeM0/AS1G05_172T01_9000000502_03909cztM0_level2_quad_clean.evt
Size (bytes)442,791,36075,623,040
Size422.3 MB 72.1 MB
Events in quadrant A3,390,676461,187
Events in quadrant B3,270,706469,103
Events in quadrant C3,157,152462,099
Events in quadrant D3,149,744444,217

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140843
B0136802
C0137922
D0139062

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6505540.830131%
B6505691.060723%
C6505991.521906%
D6505640.983859%

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 7755 6506 7 7 0.09% 0.11%
B 7755 6506 10 10 0.13% 0.15%
C 7755 6506 34 34 0.44% 0.52%
D 7755 6506 33 33 0.43% 0.51%

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 15 146664 930.85 780 765 156.7
A 2 79 115687 733.21 780 765 156.7
A 8 4 76255 481.63 780 765 156.7
B 15 204 122141 803.27 791 772 151.1
B 7 221 65221 426.55 791 772 151.1
B 14 167 13594 84.86 791 772 151.1
C 1 16 114894 649.07 761 763 175.8
C 10 65 50542 283.1 761 763 175.8
C 9 247 17298 94.04 761 763 175.8
D 13 248 65616 360.94 755 731 179.8
D 10 246 56748 311.61 755 731 179.8
D 13 239 48253 264.35 755 731 179.8

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
Veto Counter