ASTROSAT CZTI

Data Quality Report

Orbit 17095

Creation date: 2024-06-27T17:32:00.131789
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/AS1A05_004T06_9000002536_17095cztM0_level2.evt modeM0/AS1A05_004T06_9000002536_17095cztM0_level2_quad_clean.evt
Size (bytes)437,054,40085,440,960
Size416.8 MB 81.5 MB
Events in quadrant A3,094,149549,414
Events in quadrant B3,352,231564,397
Events in quadrant C3,128,754529,729
Events in quadrant D3,238,831510,108

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130772
B0137872
C0131182
D0137922

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6215310.498793%
B62161011.624839%
C6216781.254826%
D6216711.142214%

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 8960 6217 1 1 0.01% 0.02%
B 8961 6218 14 14 0.16% 0.23%
C 8961 6218 0 0 0.00% 0.00%
D 8961 6218 30 30 0.33% 0.48%

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 4 2 35602 216.38 794 781 160.9
A 0 226 6984 38.55 794 781 160.9
A 12 194 5804 31.21 794 781 160.9
B 15 35 87020 574.56 800 783 150.1
B 7 220 61805 406.56 800 783 150.1
B 0 189 30010 194.73 800 783 150.1
C 14 238 118898 667.96 766 772 176.8
C 3 233 11048 58.11 766 772 176.8
C 7 247 9952 51.91 766 772 176.8
D 5 222 178273 945.16 764 740 187.8
D 10 70 104545 552.64 764 740 187.8
D 2 234 22609 116.43 764 740 187.8

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