ASTROSAT CZTI

Data Quality Report

Orbit 41341

Creation date: 2024-06-27T22:27:52.066663
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/AS1T05_105T01_9000005658_41341cztM0_level2.fits modeM0/AS1T05_105T01_9000005658_41341cztM0_level2_quad_clean.evt
Size (bytes)336,242,88090,288,000
Size320.7 MB 86.1 MB
Events in quadrant A2,791,931618,731
Events in quadrant B2,991,146621,825
Events in quadrant C3,141,471575,752
Events in quadrant D3,103,342542,049

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116783
B0126002
C0127202
D0131872

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A537290.167535%
B53721262.345495%
C53722564.765450%
D53721633.034252%

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 7134 5373 4 4 0.06% 0.07%
B 7134 5373 97 97 1.36% 1.81%
C 7134 5373 241 241 3.38% 4.49%
D 7133 5372 161 161 2.26% 3.00%

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 10 83 500513 4099.19 590 578 122.0
A 12 189 7457 56.4 590 578 122.0
A 13 6 7235 54.58 590 578 122.0
B 5 255 556697 4871.79 583 568 114.2
B 0 190 122710 1069.99 583 568 114.2
B 12 111 14560 122.57 583 568 114.2
C 0 10 708857 5315.77 560 564 133.2
C 15 214 223901 1676.15 560 564 133.2
C 2 16 17225 125.04 560 564 133.2
D 12 217 374346 2695.22 569 554 138.7
D 5 222 225839 1624.42 569 554 138.7
D 13 249 192350 1382.94 569 554 138.7

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