ASTROSAT CZTI

Data Quality Report

Orbit 40002

Creation date: 2024-06-27T22:11:08.792950
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/AS1A12_054T03_9000005516_40002cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_40002cztM0_level2_quad_clean.evt
Size (bytes)414,138,24093,018,240
Size395.0 MB 88.7 MB
Events in quadrant A3,397,882632,874
Events in quadrant B3,295,765644,572
Events in quadrant C2,840,029627,345
Events in quadrant D5,334,947497,139

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136333
B0138182
C0121422
D0200482

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59271111.872786%
B59271602.699511%
C5927100.168719%
D592795616.129577%

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 7240 5928 77 77 1.06% 1.30%
B 7240 5928 108 108 1.49% 1.82%
C 7240 5928 6 6 0.08% 0.10%
D 7240 5928 755 755 10.43% 12.74%

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 504055 3802.36 646 632 132.4
A 13 248 323575 2439.19 646 632 132.4
A 15 223 43242 321.83 646 632 132.4
B 4 171 695037 5605.17 640 623 123.9
B 0 230 31747 251.23 640 623 123.9
B 0 221 17854 139.09 640 623 123.9
C 15 214 248846 1669.79 634 639 148.6
C 14 254 43428 287.86 634 639 148.6
C 15 208 34777 229.66 634 639 148.6
D 2 250 1538871 10531.81 586 567 146.1
D 13 171 769054 5261.35 586 567 146.1
D 13 249 301400 2059.61 586 567 146.1

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