ASTROSAT CZTI

Data Quality Report

Orbit 10974

Creation date: 2024-06-27T16:06:25.282167
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/AS1G08_027T06_9000001594_10974cztM0_level2.evt modeM0/AS1G08_027T06_9000001594_10974cztM0_level2_quad_clean.evt
Size (bytes)527,785,92088,865,280
Size503.3 MB 84.7 MB
Events in quadrant A4,466,407563,803
Events in quadrant B4,317,545565,027
Events in quadrant C3,032,255558,780
Events in quadrant D3,712,201535,069

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178662
B0171981
C0138481
D0157071

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67191582.351540%
B67193405.060277%
C6719480.714392%
D6719951.413901%

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 7349 6720 45 45 0.61% 0.67%
B 7349 6720 158 158 2.15% 2.35%
C 7349 6720 0 0 0.00% 0.00%
D 7349 6720 48 48 0.65% 0.71%

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 8 5 845713 5159.06 805 788 163.8
A 8 15 288074 1754.15 805 788 163.8
A 13 210 71976 434.67 805 788 163.8
B 4 239 994360 6494.65 797 777 153.0
B 0 214 52819 340.18 797 777 153.0
B 15 204 36097 230.87 797 777 153.0
C 13 61 5788 27.69 775 777 181.0
C 8 222 5431 25.72 775 777 181.0
C 5 207 3748 16.41 775 777 181.0
D 13 152 328998 1772.13 772 747 185.2
D 1 52 243737 1311.83 772 747 185.2
D 13 104 76650 409.78 772 747 185.2

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