ASTROSAT CZTI

Data Quality Report

Orbit 24492

Creation date: 2024-06-27T19:06:32.185752
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/AS1T03_183T01_9000003606_24492cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24492cztM0_level2_quad_clean.evt
Size (bytes)532,209,600114,600,960
Size507.6 MB 109.3 MB
Events in quadrant A5,424,860722,166
Events in quadrant B3,592,976820,968
Events in quadrant C3,081,910763,511
Events in quadrant D3,602,305735,915

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0202272
B0146512
C0129902
D0148402

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6132101116.487280%
B61321602.609263%
C6132861.402479%
D61321242.022179%

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 7448 6134 531 531 7.13% 8.66%
B 7448 6134 46 46 0.62% 0.75%
C 7448 6134 9 9 0.12% 0.15%
D 7448 6134 93 93 1.25% 1.52%

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 14 111 2630797 18504.25 717 705 142.1
A 4 2 17954 121.36 717 705 142.1
A 13 254 9168 59.54 717 705 142.1
B 3 64 524987 3640.39 776 758 144.0
B 15 33 17423 115.73 776 758 144.0
B 12 111 17072 113.29 776 758 144.0
C 14 238 121771 713.73 736 741 169.6
C 2 16 41988 243.24 736 741 169.6
C 0 10 34860 201.2 736 741 169.6
D 12 218 545598 3062.92 734 712 177.9
D 1 52 190854 1068.83 734 712 177.9
D 8 195 49389 273.62 734 712 177.9

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter