ASTROSAT CZTI

Data Quality Report

Orbit 23161

Creation date: 2024-06-27T18:50:42.524174
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/AS1A08_009T01_9000003422_23161cztM0_level2.evt modeM0/AS1A08_009T01_9000003422_23161cztM0_level2_quad_clean.evt
Size (bytes)454,942,080115,531,200
Size433.9 MB 110.2 MB
Events in quadrant A3,009,556767,193
Events in quadrant B3,091,189795,328
Events in quadrant C3,850,004760,008
Events in quadrant D3,405,034742,900

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130062
B0131763
C0154692
D0142572

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6214260.418410%
B6213320.515049%
C62133034.876871%
D62131071.722195%

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 7464 6215 0 0 0.00% 0.00%
B 7463 6214 0 0 0.00% 0.00%
C 7463 6214 111 111 1.49% 1.79%
D 7463 6214 49 49 0.66% 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 6 16 11909 72.13 777 761 154.5
A 13 254 10242 61.34 777 761 154.5
A 0 226 6809 39.13 777 761 154.5
B 12 111 17164 112.28 784 766 146.0
B 11 111 15293 99.47 784 766 146.0
B 0 190 13884 89.82 784 766 146.0
C 8 208 354891 2056.56 749 755 172.2
C 3 233 219967 1273.02 749 755 172.2
C 0 10 192206 1111.81 749 755 172.2
D 13 153 228527 1247.86 760 738 182.5
D 12 17 122577 667.45 760 738 182.5
D 1 52 88644 481.56 760 738 182.5

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