ASTROSAT CZTI

Data Quality Report

Orbit 44791

Creation date: 2024-06-27T23:06:35.928099
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_004T13_9000006022_44791cztM0_level2.fits modeM0/AS1A13_004T13_9000006022_44791cztM0_level2_quad_clean.evt
Size (bytes)551,246,40099,460,800
Size525.7 MB 94.9 MB
Events in quadrant A6,629,307632,520
Events in quadrant B4,272,826691,369
Events in quadrant C3,029,299682,509
Events in quadrant D6,002,822581,054

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0241051
B0167972
C0133421
D0219361

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A608080313.207237%
B60793185.231124%
C6079871.431156%
D607965410.758348%

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 7255 6081 608 608 8.38% 10.00%
B 7254 6080 254 254 3.50% 4.18%
C 7254 6080 72 72 0.99% 1.18%
D 7254 6080 625 625 8.62% 10.28%

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 1857359 14025.29 646 632 132.4
A 15 223 1774232 13397.37 646 632 132.4
A 13 248 395059 2979.41 646 632 132.4
B 0 189 904093 6939.29 670 650 130.2
B 5 255 422158 3237.58 670 650 130.2
B 0 190 92482 705.36 670 650 130.2
C 14 254 329855 2091.76 673 677 157.4
C 1 3 32766 203.91 673 677 157.4
C 12 250 11356 67.86 673 677 157.4
D 13 249 1202706 7456.87 651 632 161.2
D 11 241 608838 3772.91 651 632 161.2
D 1 52 545557 3380.35 651 632 161.2

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