ASTROSAT CZTI

Data Quality Report

Orbit 07858

Creation date: 2024-06-27T15:24:52.769975
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/AS1G06_077T02_9000001076_07858cztM0_level2.evt modeM0/AS1G06_077T02_9000001076_07858cztM0_level2_quad_clean.evt
Size (bytes)444,588,480106,300,800
Size424.0 MB 101.4 MB
Events in quadrant A3,022,785690,641
Events in quadrant B3,583,895713,730
Events in quadrant C3,266,963709,968
Events in quadrant D3,162,336665,203

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130413
B0147432
C0137572
D0136702

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6296240.381194%
B62961442.287166%
C6296190.301779%
D6296390.619441%

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 7561 6297 2 2 0.03% 0.03%
B 7561 6297 76 76 1.01% 1.21%
C 7561 6297 0 0 0.00% 0.00%
D 7561 6297 18 18 0.24% 0.29%

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 0 226 7293 41.55 781 766 157.1
A 12 194 6637 37.37 781 766 157.1
A 15 239 6633 37.35 781 766 157.1
B 4 239 265119 1790.5 793 777 147.6
B 4 173 108162 727.37 793 777 147.6
B 0 219 37972 251.94 793 777 147.6
C 1 16 183390 1017.2 779 786 179.5
C 8 229 37057 202.05 779 786 179.5
C 10 22 6778 33.38 779 786 179.5
D 13 104 124916 675.3 762 742 183.9
D 1 52 52625 282.16 762 742 183.9
D 2 152 44382 237.33 762 742 183.9

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