ASTROSAT CZTI

Data Quality Report

Orbit 26025

Creation date: 2024-06-27T19:23:59.530745
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/AS1A09_033T02_9000003762_26025cztM0_level2.evt modeM0/AS1A09_033T02_9000003762_26025cztM0_level2_quad_clean.evt
Size (bytes)452,208,96089,029,440
Size431.3 MB 84.9 MB
Events in quadrant A3,653,965582,385
Events in quadrant B3,263,194592,847
Events in quadrant C3,161,126554,674
Events in quadrant D3,221,822559,461

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143650
B0130130
C0126350
D0130470

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58211482.542518%
B5821651.116647%
C5821751.288438%
D5821440.755884%

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 7166 5821 81 81 1.13% 1.39%
B 7166 5821 2 2 0.03% 0.03%
C 7166 5822 0 0 0.00% 0.00%
D 7166 5821 2 2 0.03% 0.03%

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 13 453679 2774.43 829 817 163.2
A 13 254 8614 47.77 829 817 163.2
A 0 226 7113 38.57 829 817 163.2
B 10 245 33340 214.11 812 796 152.0
B 0 190 28781 184.12 812 796 152.0
B 0 229 28492 182.22 812 796 152.0
C 14 238 128608 713.74 777 782 179.1
C 3 233 5690 27.4 777 782 179.1
C 13 61 5359 25.56 777 782 179.1
D 1 52 90858 467.76 801 786 192.6
D 7 223 46198 235.83 801 786 192.6
D 2 234 23142 116.1 801 786 192.6

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