ASTROSAT CZTI

Data Quality Report

Orbit 11736

Creation date: 2024-06-27T16:17:35.750344
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_006T03_9000001732_11736cztM0_level2.evt modeM0/AS1G08_006T03_9000001732_11736cztM0_level2_quad_clean.evt
Size (bytes)488,422,080117,535,680
Size465.8 MB 112.1 MB
Events in quadrant A3,547,761780,635
Events in quadrant B4,394,027784,084
Events in quadrant C3,041,410792,763
Events in quadrant D3,366,311747,844

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147953
B0174472
C0132922
D0144612

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6509440.675987%
B65093936.037794%
C6509140.215087%
D6509370.568444%

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 7720 6511 3 3 0.04% 0.05%
B 7720 6511 148 148 1.92% 2.27%
C 7720 6511 0 0 0.00% 0.00%
D 7720 6511 18 18 0.23% 0.28%

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 1 162 123305 777.94 780 766 157.5
A 9 143 83332 524.17 780 766 157.5
A 1 178 73601 462.39 780 766 157.5
B 4 239 560905 3869.66 779 763 144.8
B 3 64 274368 1890.16 779 763 144.8
B 0 219 239476 1649.11 779 763 144.8
C 13 61 5917 28.9 778 782 177.7
C 8 222 3756 16.74 778 782 177.7
C 12 4 2063 7.21 778 782 177.7
D 8 195 140798 767.11 763 742 182.6
D 1 52 52442 283.17 763 742 182.6
D 13 249 51686 279.03 763 742 182.6

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