ASTROSAT CZTI

Data Quality Report

Orbit 47672

Creation date: 2024-07-22T09:11:26.353981
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_082T01_9000006342_47672cztM0_level2.fits modeM0/AS1A13_082T01_9000006342_47672cztM0_level2_quad_clean.evt
Size (bytes)1,363,694,400286,862,400
Size1.3 GB 273.6 MB
Events in quadrant A19,427,6131,902,434
Events in quadrant B9,466,2111,971,611
Events in quadrant C8,840,0101,900,721
Events in quadrant D11,309,9381,628,972

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0703253
B0408133
C0396543
D0473353

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03780
B03780
C03780
D03780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A185887974.287713%
B185893001.613858%
C185891921.032869%
D1858910765.788369%

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 19923 18591 123 123 0.62% 0.66%
B 19924 18592 59 59 0.30% 0.32%
C 19924 18592 50 50 0.25% 0.27%
D 19924 18592 755 755 3.79% 4.06%

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 10163763 23654.62 2061 2014 429.6
A 9 191 1096006 2546.61 2061 2014 429.6
A 13 248 113648 259.86 2061 2014 429.6
B 5 172 518514 1261.9 2075 2007 409.3
B 0 200 235079 569.43 2075 2007 409.3
B 0 190 127277 306.05 2075 2007 409.3
C 3 233 692780 1433.41 2055 2065 481.9
C 14 254 106871 217.5 2055 2065 481.9
C 12 250 23837 45.18 2055 2065 481.9
D 12 2 3232235 6411.55 2012 1948 503.8
D 2 249 144383 282.71 2012 1948 503.8
D 2 234 90321 175.4 2012 1948 503.8

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