ASTROSAT CZTI

Data Quality Report

Orbit 04124

Creation date: 2024-06-27T14:37:43.705210
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_195T01_9000000530_04124cztM0_level2.evt modeM0/AS1G05_195T01_9000000530_04124cztM0_level2_quad_clean.evt
Size (bytes)447,120,00090,339,840
Size426.4 MB 86.2 MB
Events in quadrant A3,346,314587,704
Events in quadrant B3,714,669582,875
Events in quadrant C2,892,566570,232
Events in quadrant D3,157,492553,393

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140342
B0151721
C0130681
D0140291

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6331510.805560%
B6331821.295214%
C6331270.426473%
D6331610.963513%

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 7661 6332 15 15 0.20% 0.24%
B 7661 6332 44 44 0.57% 0.69%
C 7661 6332 5 5 0.07% 0.08%
D 7661 6332 50 50 0.65% 0.79%

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 0 199 198152 1281.15 751 737 154.1
A 0 50 75869 487.58 751 737 154.1
A 15 234 48715 311.36 751 737 154.1
B 15 204 279534 1932.2 756 738 144.3
B 8 3 145208 1001.25 756 738 144.3
B 10 16 127495 878.49 756 738 144.3
C 9 144 103288 620.56 711 715 165.3
C 13 61 6063 32.36 711 715 165.3
C 12 4 5754 30.49 711 715 165.3
D 2 37 213500 1242.53 709 687 171.3
D 14 52 76634 443.42 709 687 171.3
D 2 232 47109 271.04 709 687 171.3

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