ASTROSAT CZTI

Data Quality Report

Orbit 14991

Creation date: 2024-06-27T17:02:14.328320
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/AS1T02_056T01_9000002210_14991cztM0_level2.evt modeM0/AS1T02_056T01_9000002210_14991cztM0_level2_quad_clean.evt
Size (bytes)459,642,24083,986,560
Size438.3 MB 80.1 MB
Events in quadrant A3,574,203524,527
Events in quadrant B3,412,751534,155
Events in quadrant C3,315,119515,802
Events in quadrant D3,164,649503,215

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149363
B0144012
C0138892
D0140362

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6675410.614232%
B6675460.689139%
C6675130.194757%
D6675290.434457%

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 8781 6678 6 6 0.07% 0.09%
B 8781 6678 4 4 0.05% 0.06%
C 8781 6678 0 0 0.00% 0.00%
D 8781 6678 18 18 0.20% 0.27%

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 130122 784.09 812 794 164.9
A 12 189 114364 688.55 812 794 164.9
A 1 178 61925 370.63 812 794 164.9
B 0 229 165877 1065.08 815 795 155.0
B 12 111 17537 108.02 815 795 155.0
B 11 111 14687 89.63 815 795 155.0
C 3 233 225971 1237.58 790 794 182.0
C 10 22 6439 31.02 790 794 182.0
C 13 61 5654 26.71 790 794 182.0
D 13 249 59034 309.35 782 762 188.4
D 7 38 50517 264.14 782 762 188.4
D 2 234 27690 142.95 782 762 188.4

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