ASTROSAT CZTI

Data Quality Report

Orbit 47803

Creation date: 2024-07-31T08:38:46.147589
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_037T05_9000006352_47803cztM0_level2.fits modeM0/AS1A13_037T05_9000006352_47803cztM0_level2_quad_clean.evt
Size (bytes)1,305,276,480291,110,400
Size1.2 GB 277.6 MB
Events in quadrant A18,814,7471,936,213
Events in quadrant B8,660,5291,990,903
Events in quadrant C8,125,8681,915,096
Events in quadrant D11,284,8281,694,858

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0692263
B0387373
C0381803
D0472166

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03780
B03780
C03780
D03780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A185205873.169546%
B185201961.058315%
C18520750.404968%
D185207123.844492%

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 20305 18523 109 109 0.54% 0.59%
B 20305 18523 69 69 0.34% 0.37%
C 20305 18523 22 22 0.11% 0.12%
D 20305 18523 704 704 3.47% 3.80%

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 10485287 24793.82 2040 1998 422.8
A 0 31 157844 368.59 2040 1998 422.8
A 7 3 122756 285.6 2040 1998 422.8
B 5 32 184705 456.58 2044 1976 400.2
B 0 245 107591 263.9 2044 1976 400.2
B 0 200 97322 238.24 2044 1976 400.2
C 12 2 166134 347.65 2006 2015 472.1
C 14 254 77579 160.06 2006 2015 472.1
C 1 3 33892 67.52 2006 2015 472.1
D 12 2 1082693 2160.4 1978 1917 500.3
D 13 171 970090 1935.32 1978 1917 500.3
D 2 37 860958 1717.17 1978 1917 500.3

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