ASTROSAT CZTI

Data Quality Report

Orbit 04626

Creation date: 2024-06-27T14:44:43.869303
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/AS1G05_154T01_9000000576_04626cztM0_level2.evt modeM0/AS1G05_154T01_9000000576_04626cztM0_level2_quad_clean.evt
Size (bytes)1,826,182,080163,054,080
Size1.7 GB 155.5 MB
Events in quadrant A7,422,2661,085,819
Events in quadrant B7,885,4441,089,196
Events in quadrant C7,627,0191,082,966
Events in quadrant D31,266,319546,857

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03300
B03300
C03300
D03300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0335252
B0343052
C0343002
D01039212

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A163902271.384991%
B163902681.635143%
C163902371.446004%
D16390999460.976205%

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 17165 16393 3 3 0.02% 0.02%
B 17165 16393 24 24 0.14% 0.15%
C 17165 16393 91 91 0.53% 0.56%
D 17164 16392 9044 9044 52.69% 55.17%

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 15 89751 228.64 1882 1842 384.5
A 13 251 28560 69.49 1882 1842 384.5
A 15 174 23223 55.61 1882 1842 384.5
B 10 16 189088 510.61 1904 1858 366.7
B 15 204 118879 319.14 1904 1858 366.7
B 15 54 86681 231.33 1904 1858 366.7
C 8 208 436499 1023.81 1825 1836 424.6
C 14 48 26057 57.05 1825 1836 424.6
C 0 239 22978 49.8 1825 1836 424.6
D 8 112 23790966 94681.67 1044 1011 251.3
D 13 235 2566631 10210.91 1044 1011 251.3
D 2 234 475327 1887.73 1044 1011 251.3

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