ASTROSAT CZTI

Data Quality Report

Orbit 09446

Creation date: 2024-06-27T15:46:02.456983
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/AS1A02_178T01_9000001340_09446cztM0_level2.evt modeM0/AS1A02_178T01_9000001340_09446cztM0_level2_quad_clean.evt
Size (bytes)685,442,88085,812,480
Size653.7 MB 81.8 MB
Events in quadrant A4,225,647566,237
Events in quadrant B3,785,236570,642
Events in quadrant C8,467,491363,765
Events in quadrant D3,749,795553,899

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022046
B022042
C022054
D022054

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0244876791
B0224615602
C05654126787
D0230295973

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8042871.081820%
B8143730.896476%
C6687211031.553761%
D8155570.698958%

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 11240 9296 6 6 0.05% 0.06%
B 11432 9338 3 3 0.03% 0.03%
C 11167 7729 1557 1557 13.94% 20.14%
D 11265 9388 9 9 0.08% 0.10%

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 8 5 386144 2024.41 926 906 190.3
A 1 162 112461 586.22 926 906 190.3
A 4 2 53674 277.29 926 906 190.3
B 0 214 51547 278.48 937 912 181.8
B 0 219 36136 193.73 937 912 181.8
B 4 80 27673 147.18 937 912 181.8
C 4 254 5934058 41846.13 606 609 141.8
C 9 68 162943 1144.87 606 609 141.8
C 13 61 4576 27.98 606 609 141.8
D 8 195 120356 524.7 905 880 227.7
D 1 52 114532 499.13 905 880 227.7
D 7 71 55285 238.93 905 880 227.7

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