ASTROSAT CZTI

Data Quality Report

Orbit 24467

Creation date: 2024-06-27T19:06:18.811983
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/AS1T03_183T01_9000003606_24467cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24467cztM0_level2_quad_clean.evt
Size (bytes)530,000,640131,607,360
Size505.4 MB 125.5 MB
Events in quadrant A3,577,575883,032
Events in quadrant B4,102,039891,325
Events in quadrant C4,049,597844,052
Events in quadrant D3,794,968828,083

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159812
B0171882
C0171032
D0166702

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77491712.206736%
B77493284.232804%
C77493414.400568%
D77492142.761647%

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 8324 7752 0 0 0.00% 0.00%
B 8324 7752 55 55 0.66% 0.71%
C 8324 7752 32 32 0.38% 0.41%
D 8324 7752 45 45 0.54% 0.58%

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 13 254 12303 61.1 927 905 186.5
A 3 137 8671 41.63 927 905 186.5
A 0 226 8064 38.38 927 905 186.5
B 3 64 412102 2330.46 924 896 176.4
B 7 202 39298 217.64 924 896 176.4
B 12 111 22130 120.34 924 896 176.4
C 2 16 414582 1992.93 890 895 207.6
C 14 238 141150 675.67 890 895 207.6
C 7 247 16347 74.44 890 895 207.6
D 12 218 152899 702.49 898 869 216.4
D 8 195 88906 406.8 898 869 216.4
D 10 199 73684 336.46 898 869 216.4

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