ASTROSAT CZTI

Data Quality Report

Orbit 03748

Creation date: 2024-06-27T14:33:11.228734
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_248T01_9000000486_03748cztM0_level2.evt modeM0/AS1G05_248T01_9000000486_03748cztM0_level2_quad_clean.evt
Size (bytes)478,261,44064,995,840
Size456.1 MB 62.0 MB
Events in quadrant A3,403,983394,385
Events in quadrant B4,382,105389,779
Events in quadrant C2,873,292389,217
Events in quadrant D3,417,356375,048

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137673
B0168632
C0124632
D0142402

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60061722.863803%
B60061642.730603%
C6006761.265401%
D60061041.731602%

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 7266 6006 38 38 0.52% 0.63%
B 7266 6006 43 43 0.59% 0.72%
C 7266 6006 1 1 0.01% 0.02%
D 7266 6006 28 28 0.39% 0.47%

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 0 118 160100 1049.3 758 744 151.9
A 8 15 140015 917.05 758 744 151.9
A 13 251 94391 616.63 758 744 151.9
B 5 70 807983 5504.19 767 752 146.7
B 15 204 429333 2922.32 767 752 146.7
B 14 167 67134 452.63 767 752 146.7
C 7 220 6632 34.87 730 732 169.2
C 13 61 6096 31.7 730 732 169.2
C 14 67 5072 25.65 730 732 169.2
D 1 20 473700 2768.26 727 708 170.9
D 6 112 60291 348.72 727 708 170.9
D 9 35 38617 221.87 727 708 170.9

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
Veto Counter