ASTROSAT CZTI

Data Quality Report

Orbit 22054

Creation date: 2024-06-27T18:35:56.848968
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_167T01_9000003264_22054cztM0_level2.evt modeM0/AS1A07_167T01_9000003264_22054cztM0_level2_quad_clean.evt
Size (bytes)1,148,529,600226,702,080
Size1.1 GB 216.2 MB
Events in quadrant A7,395,8881,469,110
Events in quadrant B7,981,0931,500,015
Events in quadrant C7,532,0021,443,150
Events in quadrant D10,794,9051,352,981

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0323723
B0339313
C0323903
D0428723

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03220
B03220
C03220
D03220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15973370.231641%
B159731470.920303%
C159731370.857697%
D159739616.016403%

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 18318 15976 1 1 0.01% 0.01%
B 18318 15973 63 63 0.34% 0.39%
C 18318 15973 0 0 0.00% 0.00%
D 18317 15972 832 832 4.54% 5.21%

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 5 16 43452 109.27 1907 1866 380.6
A 13 254 24422 59.27 1907 1866 380.6
A 3 137 16229 37.74 1907 1866 380.6
B 3 64 216631 601.0 1901 1851 357.4
B 0 197 96620 265.18 1901 1851 357.4
B 0 230 82539 225.78 1901 1851 357.4
C 14 238 293768 675.89 1851 1866 431.9
C 10 22 15550 31.69 1851 1866 431.9
C 13 61 12886 25.52 1851 1866 431.9
D 1 52 1410842 3232.43 1815 1761 435.9
D 7 38 1183314 2710.48 1815 1761 435.9
D 7 238 890791 2039.43 1815 1761 435.9

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