ASTROSAT CZTI

Data Quality Report

Orbit 46909

Creation date: 2024-06-27T23:29:18.274624
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_053T01_9000006282_46909cztM0_level2.fits modeM0/AS1A13_053T01_9000006282_46909cztM0_level2_quad_clean.evt
Size (bytes)659,422,08086,973,120
Size628.9 MB 82.9 MB
Events in quadrant A5,692,004651,366
Events in quadrant B9,767,666422,124
Events in quadrant C2,545,805653,130
Events in quadrant D5,958,680504,844

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208692
B0330091
C0117431
D0216211

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57512644.590506%
B5751267946.583203%
C5751470.817249%
D5752110419.193324%

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 6906 5751 35 35 0.51% 0.61%
B 6906 5751 2000 2000 28.96% 34.78%
C 6906 5751 0 0 0.00% 0.00%
D 6907 5752 993 993 14.38% 17.26%

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 2986223 21864.93 663 650 136.5
A 13 248 86043 625.38 663 650 136.5
A 15 254 39700 285.98 663 650 136.5
B 3 112 7222703 64275.78 572 555 112.4
B 0 200 117452 1040.36 572 555 112.4
B 15 36 103711 918.07 572 555 112.4
C 14 254 9717 59.67 647 649 152.0
C 12 250 9599 58.89 647 649 152.0
C 3 233 4671 26.46 647 649 152.0
D 12 0 2458527 16339.19 600 580 150.4
D 13 249 839868 5579.16 600 580 150.4
D 1 52 112555 744.35 600 580 150.4

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