ASTROSAT CZTI

Data Quality Report

Orbit 22560

Creation date: 2024-06-27T18:42:48.038170
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/AS1A07_148T05_9000003346_22560cztM0_level2.evt modeM0/AS1A07_148T05_9000003346_22560cztM0_level2_quad_clean.evt
Size (bytes)1,189,998,720222,287,040
Size1.1 GB 212.0 MB
Events in quadrant A8,263,1431,392,458
Events in quadrant B8,501,0361,419,392
Events in quadrant C8,407,2031,365,284
Events in quadrant D9,663,3681,328,060

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0362113
B0367303
C0364993
D0408543

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03620
B03620
C03620
D03620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A178021400.786428%
B178031550.870640%
C178032461.381790%
D178033602.022131%

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 19832 17805 0 0 0.00% 0.00%
B 19833 17806 4 4 0.02% 0.02%
C 19833 17806 2 2 0.01% 0.01%
D 19833 17806 255 255 1.29% 1.43%

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 13 254 28279 61.04 2138 2091 429.0
A 13 34 21472 45.17 2138 2091 429.0
A 3 137 18699 38.71 2138 2091 429.0
B 15 33 60735 144.74 2128 2080 405.2
B 12 111 50253 118.87 2128 2080 405.2
B 11 111 44443 104.54 2128 2080 405.2
C 14 238 320599 663.64 2051 2063 480.0
C 10 22 76107 154.26 2051 2063 480.0
C 13 61 14356 25.61 2051 2063 480.0
D 1 52 1266696 2488.91 2075 2012 508.1
D 13 172 209173 407.69 2075 2012 508.1
D 13 174 160925 312.74 2075 2012 508.1

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