ASTROSAT CZTI

Data Quality Report

Orbit 37569

Creation date: 2024-06-27T21:41:39.422376
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/AS1C07_001T11_9000005336_37569cztM0_level2.evt modeM0/AS1C07_001T11_9000005336_37569cztM0_level2_quad_clean.evt
Size (bytes)423,365,760102,669,120
Size403.8 MB 97.9 MB
Events in quadrant A2,810,916685,400
Events in quadrant B3,486,578677,018
Events in quadrant C2,747,190689,871
Events in quadrant D3,385,171654,367

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118642
B0142181
C0117861
D0141601

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A576550.086730%
B57652694.666088%
C576590.156114%
D57651472.549870%

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 7078 5766 1 1 0.01% 0.02%
B 7078 5766 209 209 2.95% 3.62%
C 7078 5766 7 7 0.10% 0.12%
D 7078 5766 146 146 2.06% 2.53%

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 10 83 298703 2309.92 637 624 129.0
A 12 189 23946 180.73 637 624 129.0
A 13 6 12889 95.05 637 624 129.0
B 5 200 491719 4195.93 617 599 117.0
B 0 213 210896 1796.69 617 599 117.0
B 5 172 115427 981.04 617 599 117.0
C 15 214 247106 1687.05 623 626 146.1
C 14 254 31749 213.02 623 626 146.1
C 0 10 30179 202.28 623 626 146.1
D 13 243 292048 1949.18 616 598 149.5
D 2 249 226869 1513.27 616 598 149.5
D 13 249 128709 856.79 616 598 149.5

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