ASTROSAT CZTI

Data Quality Report

Orbit 32370

Creation date: 2024-06-27T20:39:27.306722
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_131T01_9000004702_32370cztM0_level2.evt modeM0/AS1A09_131T01_9000004702_32370cztM0_level2_quad_clean.evt
Size (bytes)889,634,880135,823,680
Size848.4 MB 129.5 MB
Events in quadrant A5,254,722943,432
Events in quadrant B6,111,956960,572
Events in quadrant C9,366,282775,212
Events in quadrant D5,703,734910,480

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0207833
B0240422
C0329152
D0222392

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75084425.887054%
B75082453.263186%
C7508222529.635056%
D75083134.168887%

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 7978 7509 205 205 2.57% 2.73%
B 7978 7509 67 67 0.84% 0.89%
C 7978 7509 1590 1590 19.93% 21.17%
D 7978 7509 220 220 2.76% 2.93%

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 12 96 1865114 10740.24 867 848 173.6
A 13 6 24426 135.84 867 848 173.6
A 0 6 19351 106.6 867 848 173.6
B 6 159 2183449 13216.83 874 851 165.1
B 5 172 252747 1525.37 874 851 165.1
B 10 245 58686 350.22 874 851 165.1
C 3 233 6187966 37243.53 708 713 166.1
C 0 10 151780 909.33 708 713 166.1
C 14 238 122939 735.73 708 713 166.1
D 8 195 950511 4711.76 845 821 201.6
D 12 1 444173 2199.63 845 821 201.6
D 12 233 317340 1570.37 845 821 201.6

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