ASTROSAT CZTI

Data Quality Report

Orbit 48345

Creation date: 2024-09-05T16:32:08.189947
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/AS1A13_037T05_9000006424_48345cztM0_level2.fits modeM0/AS1A13_037T05_9000006424_48345cztM0_level2_quad_clean.evt
Size (bytes)463,032,000113,489,280
Size441.6 MB 108.2 MB
Events in quadrant A7,122,529747,250
Events in quadrant B3,432,030797,442
Events in quadrant C3,035,756755,643
Events in quadrant D3,052,615689,769

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0263284
B0143912
C0134182
D0134572

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64024106.404249%
B64021512.358638%
C64021011.577632%
D64021171.827554%

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 7602 6402 53 53 0.70% 0.83%
B 7602 6402 30 30 0.39% 0.47%
C 7602 6402 10 10 0.13% 0.16%
D 7602 6402 6 6 0.08% 0.09%

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 10 83 4112476 26397.1 758 743 155.8
A 13 248 72796 462.57 758 743 155.8
A 13 254 12118 73.02 758 743 155.8
B 0 200 182659 1233.92 759 738 147.4
B 10 245 89977 605.29 759 738 147.4
B 4 21 80588 541.6 759 738 147.4
C 12 2 86644 490.68 748 751 175.0
C 0 207 28253 157.11 748 751 175.0
C 13 61 4884 23.61 748 751 175.0
D 2 165 51879 269.04 755 731 190.1
D 2 249 40144 207.32 755 731 190.1
D 2 234 28098 143.95 755 731 190.1

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