ASTROSAT CZTI

Data Quality Report

Orbit 11487

Creation date: 2024-06-27T16:13:39.846716
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/AS1A04_107T01_9000001684_11487cztM0_level2.evt modeM0/AS1A04_107T01_9000001684_11487cztM0_level2_quad_clean.evt
Size (bytes)678,902,40085,052,160
Size647.5 MB 81.1 MB
Events in quadrant A8,523,955474,192
Events in quadrant B4,497,380535,993
Events in quadrant C3,252,860545,359
Events in quadrant D3,804,187523,485

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0302263
B0178442
C0145342
D0161702

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7123177924.975432%
B71233244.548645%
C7123610.856381%
D71231882.639337%

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 8789 7126 1185 1185 13.48% 16.63%
B 8789 7126 148 148 1.68% 2.08%
C 8789 7126 0 0 0.00% 0.00%
D 8789 7126 90 90 1.02% 1.26%

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 5297837 33702.25 770 752 157.2
A 15 223 62496 392.84 770 752 157.2
A 1 162 43589 272.55 770 752 157.2
B 4 239 856885 5288.13 844 821 161.9
B 11 51 137738 845.77 844 821 161.9
B 15 204 99694 610.76 844 821 161.9
C 12 4 9233 43.61 830 834 192.6
C 14 67 6746 30.69 830 834 192.6
C 13 61 6018 26.91 830 834 192.6
D 1 52 470416 2367.06 822 798 198.4
D 2 120 67154 334.46 822 798 198.4
D 10 253 57170 284.14 822 798 198.4

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