ASTROSAT CZTI

Data Quality Report

Orbit 03769

Creation date: 2024-06-27T14:33:27.067451
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_03769cztM0_level2.evt modeM0/AS1G05_248T01_9000000486_03769cztM0_level2_quad_clean.evt
Size (bytes)537,382,08087,707,520
Size512.5 MB 83.6 MB
Events in quadrant A4,627,905535,795
Events in quadrant B4,249,346540,672
Events in quadrant C3,221,267541,538
Events in quadrant D3,675,503524,251

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187863
B0175482
C0150225
D0162692

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73772273.077132%
B7377751.016673%
C7376130.176247%
D7377380.515115%

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 7802 7378 153 153 1.96% 2.07%
B 7802 7378 29 29 0.37% 0.39%
C 7802 7378 0 0 0.00% 0.00%
D 7802 7378 26 26 0.33% 0.35%

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 13 251 691040 4016.23 832 811 171.9
A 0 118 547515 3181.1 832 811 171.9
A 0 50 75708 435.8 832 811 171.9
B 15 204 770197 4693.58 849 828 163.9
B 5 70 49704 298.17 849 828 163.9
B 4 81 45701 273.75 849 828 163.9
C 13 61 7108 32.59 821 823 192.8
C 8 128 4709 20.15 821 823 192.8
C 12 4 3519 13.98 821 823 192.8
D 1 84 241705 1217.58 819 795 197.9
D 13 249 78219 391.31 819 795 197.9
D 13 239 50848 252.97 819 795 197.9

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