ASTROSAT CZTI

Data Quality Report

Orbit 21928

Creation date: 2024-06-27T18:34:04.586300
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/AS1A07_100T03_9000003242_21928cztM0_level2.evt modeM0/AS1A07_100T03_9000003242_21928cztM0_level2_quad_clean.evt
Size (bytes)653,774,400126,624,960
Size623.5 MB 120.8 MB
Events in quadrant A3,240,695898,921
Events in quadrant B4,029,674896,468
Events in quadrant C3,398,902881,240
Events in quadrant D8,714,114728,093

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137001
B0160861
C0140511
D0302571

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6159851.380094%
B61602894.691558%
C61591201.948368%
D6159178328.949505%

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 7474 6159 0 0 0.00% 0.00%
B 7475 6160 121 121 1.62% 1.96%
C 7474 6159 0 0 0.00% 0.00%
D 7474 6159 1699 1699 22.73% 27.59%

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 13 254 10611 59.08 838 824 165.7
A 0 226 7378 39.56 838 824 165.7
A 3 137 6284 32.96 838 824 165.7
B 0 85 569145 3765.94 823 803 150.9
B 3 64 105762 695.48 823 803 150.9
B 0 197 71758 470.16 823 803 150.9
C 14 238 133221 716.61 815 821 184.8
C 10 22 89163 478.15 815 821 184.8
C 13 61 5792 26.91 815 821 184.8
D 7 238 4338749 25058.85 726 707 173.1
D 12 235 740662 4274.38 726 707 173.1
D 1 52 661803 3818.84 726 707 173.1

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