ASTROSAT CZTI

Data Quality Report

Orbit 50861

Creation date: 2025-02-22T06:06:54.397215
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/AS1C07_001T01_9000006450_50861cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50861cztM0_level2_quad_clean.evt
Size (bytes)747,109,440112,481,280
Size712.5 MB 107.3 MB
Events in quadrant A5,392,699760,219
Events in quadrant B5,549,973828,604
Events in quadrant C8,976,165594,139
Events in quadrant D7,094,819646,660

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0217720
B0224860
C0324860
D0267920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82882583.112934%
B82883534.259170%
C8289195623.597539%
D82898169.844372%

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 8288 8288 187 187 2.26% 2.26%
B 8287 8287 242 242 2.92% 2.92%
C 8289 8289 1316 1316 15.88% 15.88%
D 8289 8289 755 755 9.11% 9.11%

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 12 80 320454 1460.74 877 856 218.8
A 4 249 259931 1184.11 877 856 218.8
A 3 130 234011 1065.65 877 856 218.8
B 4 206 1088941 5797.33 880 849 187.7
B 10 247 314577 1671.53 880 849 187.7
B 5 172 123126 651.49 880 849 187.7
C 4 210 2194099 10102.52 791 786 217.1
C 15 229 1999953 9208.27 791 786 217.1
C 13 3 298714 1372.27 791 786 217.1
D 15 185 898244 3891.24 829 799 230.6
D 2 249 394803 1708.36 829 799 230.6
D 2 216 323623 1399.73 829 799 230.6

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