ASTROSAT CZTI

Data Quality Report

Orbit 18761

Creation date: 2024-06-27T17:54:31.380729
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_115T03_9000002806_18761cztM0_level2.evt modeM0/AS1A05_115T03_9000002806_18761cztM0_level2_quad_clean.evt
Size (bytes)478,088,64095,840,640
Size455.9 MB 91.4 MB
Events in quadrant A3,434,042613,853
Events in quadrant B3,491,685622,980
Events in quadrant C3,545,225600,685
Events in quadrant D3,546,486591,667

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144372
B0146152
C0145372
D0149892

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67911392.046827%
B67911762.591665%
C67901882.768778%
D67901181.737850%

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 9011 6793 0 0 0.00% 0.00%
B 9011 6793 0 0 0.00% 0.00%
C 9010 6792 0 0 0.00% 0.00%
D 9010 6792 1 1 0.01% 0.01%

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 9 143 18620 99.83 884 866 177.8
A 13 254 9091 46.25 884 866 177.8
A 0 226 7766 38.8 884 866 177.8
B 0 229 23556 134.36 880 857 168.9
B 12 111 20332 115.28 880 857 168.9
B 4 216 19371 109.59 880 857 168.9
C 14 238 132695 660.51 856 864 199.6
C 3 233 77425 383.59 856 864 199.6
C 13 61 6005 25.76 856 864 199.6
D 1 52 180166 844.63 872 850 212.3
D 7 96 50990 236.17 872 850 212.3
D 2 234 29883 136.75 872 850 212.3

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