ASTROSAT CZTI

Data Quality Report

Orbit 38047

Creation date: 2024-06-27T21:47:45.284705
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/AS1A11_024T01_9000005358_38047cztM0_level2.fits modeM0/AS1A11_024T01_9000005358_38047cztM0_level2_quad_clean.evt
Size (bytes)87,966,72023,192,640
Size83.9 MB 22.1 MB
Events in quadrant A776,692156,620
Events in quadrant B838,338156,722
Events in quadrant C661,416155,039
Events in quadrant D875,015136,025

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1140170566264872140170552672302
B1-1-1
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A031031
B033341
C027021
D034181

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A130860.458716%
B1308362.752294%
C130820.152905%
D1308654.969419%

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 1308 1308 1 1 0.08% 0.08%
B 1308 1308 25 25 1.91% 1.91%
C 1308 1308 1 1 0.08% 0.08%
D 1308 1308 48 48 3.67% 3.67%

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 140303 4101.85 157 154 34.2
A 12 16 14469 418.97 157 154 34.2
A 13 6 4210 118.71 157 154 34.2
B 0 213 47552 1524.26 152 149 31.1
B 4 171 42371 1357.66 152 149 31.1
B 0 186 29581 946.39 152 149 31.1
C 15 214 59087 1592.63 150 151 37.0
C 3 233 6721 177.54 150 151 37.0
C 1 23 4110 106.98 150 151 37.0
D 10 199 134381 3429.46 150 145 39.1
D 13 249 61989 1579.99 150 145 39.1
D 1 52 27225 691.84 150 145 39.1

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