ASTROSAT CZTI

Data Quality Report

Orbit 13635

Creation date: 2024-06-27T16:43:45.465613
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_038T01_9000002018_13635cztM0_level2.evt modeM0/AS1G08_038T01_9000002018_13635cztM0_level2_quad_clean.evt
Size (bytes)438,940,80076,959,360
Size418.6 MB 73.4 MB
Events in quadrant A2,780,366471,847
Events in quadrant B2,949,208481,761
Events in quadrant C2,859,504508,405
Events in quadrant D4,329,362481,972

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114433
B0118972
C0115432
D0168912

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5524370.669804%
B5524510.923244%
C5524320.579290%
D5524540.977552%

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 6865 5527 5 5 0.07% 0.09%
B 6865 5527 8 8 0.12% 0.14%
C 6865 5527 0 0 0.00% 0.00%
D 6865 5527 10 10 0.15% 0.18%

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 9 143 16951 112.81 713 698 144.1
A 15 69 11186 72.8 713 698 144.1
A 1 162 7728 48.79 713 698 144.1
B 3 64 61269 456.23 705 689 132.8
B 0 229 58848 438.0 705 689 132.8
B 0 219 31939 235.35 705 689 132.8
C 3 233 156940 993.79 692 702 157.2
C 13 61 4848 26.37 692 702 157.2
C 0 207 3055 14.97 692 702 157.2
D 13 122 1499556 8969.52 695 678 167.1
D 8 195 96873 575.65 695 678 167.1
D 2 136 78114 463.39 695 678 167.1

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