ASTROSAT CZTI

Data Quality Report

Orbit 44845

Creation date: 2024-06-27T23:07:08.099105
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/AS1A13_017T01_9000006028_44845cztM0_level2.fits modeM0/AS1A13_017T01_9000006028_44845cztM0_level2_quad_clean.evt
Size (bytes)1,301,541,120287,807,040
Size1.2 GB 274.5 MB
Events in quadrant A13,465,0391,917,653
Events in quadrant B9,558,1621,974,516
Events in quadrant C8,357,3761,900,615
Events in quadrant D15,353,5371,633,732

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0565563
B0413503
C0388453
D0587773

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03780
B03780
C03780
D03780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186873932.103066%
B186874882.611441%
C186881820.973887%
D1868712316.587467%

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 20172 18690 1 1 0.00% 0.01%
B 20172 18690 138 138 0.68% 0.74%
C 20173 18691 19 19 0.09% 0.10%
D 20172 18690 1008 1008 5.00% 5.39%

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 10 83 5481643 12916.0 2056 2011 424.3
A 3 137 24263 52.45 2056 2011 424.3
A 13 254 22781 48.96 2056 2011 424.3
B 5 255 648566 1605.45 2039 1975 402.7
B 0 155 304135 750.24 2039 1975 402.7
B 0 183 143102 350.41 2039 1975 402.7
C 12 2 233546 492.32 2013 2021 470.3
C 14 254 140328 294.1 2013 2021 470.3
C 3 233 70642 145.92 2013 2021 470.3
D 13 174 3168217 6494.78 1962 1898 487.5
D 11 241 853948 1747.73 1962 1898 487.5
D 2 249 766694 1568.76 1962 1898 487.5

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