ASTROSAT CZTI

Data Quality Report

Orbit 27048

Creation date: 2024-06-27T19:35:53.636896
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/AS1A09_120T02_9000003904_27048cztM0_level2.evt modeM0/AS1A09_120T02_9000003904_27048cztM0_level2_quad_clean.evt
Size (bytes)720,429,12071,657,280
Size687.1 MB 68.3 MB
Events in quadrant A6,716,982384,914
Events in quadrant B6,526,633444,858
Events in quadrant C3,432,582440,053
Events in quadrant D4,680,630423,939

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0244300
B0236130
C0141500
D0183200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6821135919.923765%
B6822142320.858986%
C68221041.524480%
D68222022.961009%

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 7746 6821 898 898 11.59% 13.17%
B 7746 6821 1077 1077 13.90% 15.79%
C 7747 6822 0 0 0.00% 0.00%
D 7747 6822 148 148 1.91% 2.17%

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 14 235 3560101 21797.97 812 794 163.3
A 8 192 15512 90.14 812 794 163.3
A 13 254 10505 59.47 812 794 163.3
B 0 189 3087688 19536.69 817 799 158.0
B 10 246 145154 913.61 817 799 158.0
B 3 112 46447 288.9 817 799 158.0
C 14 238 136276 682.35 842 850 198.5
C 15 208 10480 48.52 842 850 198.5
C 13 61 5733 24.6 842 850 198.5
D 1 52 995969 4892.41 845 823 203.4
D 2 250 447163 2194.33 845 823 203.4
D 2 234 29876 142.83 845 823 203.4

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