ASTROSAT CZTI

Data Quality Report

Orbit 46808

Creation date: 2024-06-27T23:27:55.259284
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_074T06_9000006270_46808cztM0_level2.fits modeM0/AS1A13_074T06_9000006270_46808cztM0_level2_quad_clean.evt
Size (bytes)466,450,560106,174,080
Size444.8 MB 101.3 MB
Events in quadrant A6,230,967712,134
Events in quadrant B3,486,616739,815
Events in quadrant C3,102,048693,398
Events in quadrant D3,963,925635,190

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0226431
B0144711
C0136781
D0160131

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62242033.261568%
B62241241.992288%
C6225831.333333%
D62251392.232932%

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 7424 6225 47 47 0.63% 0.76%
B 7424 6225 23 23 0.31% 0.37%
C 7425 6226 43 43 0.58% 0.69%
D 7425 6226 92 92 1.24% 1.48%

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 3350005 22505.64 721 707 148.8
A 9 191 34648 228.07 721 707 148.8
A 0 243 15532 99.62 721 707 148.8
B 3 112 319792 2222.85 724 704 143.5
B 15 36 101341 701.06 724 704 143.5
B 5 172 71289 491.71 724 704 143.5
C 14 254 255144 1525.17 703 708 166.8
C 3 233 39533 232.73 703 708 166.8
C 0 207 32007 187.62 703 708 166.8
D 1 52 498535 2802.69 697 675 177.6
D 13 138 258784 1453.02 697 675 177.6
D 13 249 156933 879.65 697 675 177.6

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