ASTROSAT CZTI

Data Quality Report

Orbit 18131

Creation date: 2024-06-27T17:45:33.662424
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/AS1A05_186T01_9000002692_18131cztM0_level2.evt modeM0/AS1A05_186T01_9000002692_18131cztM0_level2_quad_clean.evt
Size (bytes)451,085,76080,461,440
Size430.2 MB 76.7 MB
Events in quadrant A3,109,014504,721
Events in quadrant B3,236,938512,957
Events in quadrant C3,148,752484,678
Events in quadrant D3,712,655468,604

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135862
B0138492
C0136202
D0155253

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6683180.269340%
B6683290.433937%
C6683460.688314%
D6682911.361868%

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 7663 6684 2 2 0.03% 0.03%
B 7663 6684 0 0 0.00% 0.00%
C 7663 6684 0 0 0.00% 0.00%
D 7662 6683 69 69 0.90% 1.03%

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 4 2 11894 67.27 806 788 165.1
A 0 226 6879 36.9 806 788 165.1
A 3 137 5952 31.28 806 788 165.1
B 0 189 31714 197.8 809 789 156.3
B 12 111 18711 114.63 809 789 156.3
B 7 220 16961 103.44 809 789 156.3
C 14 238 120171 654.6 772 775 182.4
C 0 207 12806 65.96 772 775 182.4
C 3 233 7688 37.9 772 775 182.4
D 11 176 359849 1881.1 776 754 190.9
D 7 238 206661 1078.63 776 754 190.9
D 10 70 66958 346.81 776 754 190.9

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