ASTROSAT CZTI

Data Quality Report

Orbit 17189

Creation date: 2024-06-27T17:33:21.512142
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/AS1A05_185T04_9000002548_17189cztM0_level2.evt modeM0/AS1A05_185T04_9000002548_17189cztM0_level2_quad_clean.evt
Size (bytes)1,064,445,120202,066,560
Size1015.1 MB 192.7 MB
Events in quadrant A7,595,9651,281,333
Events in quadrant B7,761,5861,284,725
Events in quadrant C7,473,1521,235,693
Events in quadrant D8,335,8261,227,430

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03220
B03220
C03220
D03220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330323
B0332693
C0324123
D0355963

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A158143182.010876%
B158143622.289111%
C158143222.036170%
D158142581.631466%

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 17014 15816 24 24 0.14% 0.15%
B 17014 15816 34 34 0.20% 0.21%
C 17014 15816 0 0 0.00% 0.00%
D 17014 15816 61 61 0.36% 0.39%

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 4 2 192117 502.12 1875 1832 379.0
A 12 189 188902 493.64 1875 1832 379.0
A 0 226 16324 38.24 1875 1832 379.0
B 7 220 155295 425.6 1869 1821 360.6
B 0 219 70607 190.75 1869 1821 360.6
B 15 35 65903 177.71 1869 1821 360.6
C 14 238 275983 651.9 1797 1806 420.6
C 3 233 183201 431.29 1797 1806 420.6
C 13 61 12877 26.32 1797 1806 420.6
D 5 222 1136022 2554.05 1829 1774 444.1
D 10 70 132585 294.55 1829 1774 444.1
D 2 234 67802 148.68 1829 1774 444.1

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