ASTROSAT CZTI

Data Quality Report

Orbit 14400

Creation date: 2024-06-27T16:54:36.707647
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/AS1G08_066T04_9000002122_14400cztM0_level2.evt modeM0/AS1G08_066T04_9000002122_14400cztM0_level2_quad_clean.evt
Size (bytes)526,193,280109,661,760
Size501.8 MB 104.6 MB
Events in quadrant A3,219,421728,170
Events in quadrant B3,398,583749,582
Events in quadrant C3,772,182724,533
Events in quadrant D5,101,126662,122

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136783
B0142102
C0151562
D0195212

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A654790.137468%
B6547310.473499%
C6547110.168016%
D654776811.730564%

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 7848 6549 0 0 0.00% 0.00%
B 7848 6549 6 6 0.08% 0.09%
C 7848 6549 1 1 0.01% 0.02%
D 7848 6548 740 740 9.43% 11.30%

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 12 189 23537 137.84 821 805 164.9
A 8 15 17086 98.73 821 805 164.9
A 4 2 9305 51.54 821 805 164.9
B 0 229 38953 249.92 830 810 152.6
B 0 189 31826 203.22 830 810 152.6
B 4 173 24956 158.21 830 810 152.6
C 3 233 573028 3067.58 820 825 186.5
C 13 61 5716 26.22 820 825 186.5
C 14 234 3801 15.95 820 825 186.5
D 15 0 949836 5362.36 755 741 177.0
D 13 122 845584 4773.33 755 741 177.0
D 10 172 181233 1019.77 755 741 177.0

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