ASTROSAT CZTI

Data Quality Report

Orbit 46675

Creation date: 2024-06-27T23:26:20.397756
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_092T18_9000006248_46675cztM0_level2.fits modeM0/AS1A13_092T18_9000006248_46675cztM0_level2_quad_clean.evt
Size (bytes)435,078,72090,639,360
Size414.9 MB 86.4 MB
Events in quadrant A6,063,754578,522
Events in quadrant B3,474,306620,045
Events in quadrant C2,485,564605,270
Events in quadrant D3,638,142540,853

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216221
B0142471
C0117511
D0148561

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57103716.497373%
B57111282.241289%
C5711290.507792%
D57111883.291893%

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 6790 5711 258 258 3.80% 4.52%
B 6791 5712 57 57 0.84% 1.00%
C 6791 5712 1 1 0.01% 0.02%
D 6791 5711 144 144 2.12% 2.52%

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 3099040 24628.48 603 590 125.8
A 9 191 435573 3457.52 603 590 125.8
A 13 248 54141 425.66 603 590 125.8
B 4 171 468025 3866.59 616 598 120.9
B 0 189 247889 2045.61 616 598 120.9
B 5 255 119835 986.34 616 598 120.9
C 12 2 25038 169.47 611 613 144.1
C 9 237 22652 152.92 611 613 144.1
C 3 233 19996 134.49 611 613 144.1
D 12 128 393304 2580.23 597 577 152.2
D 1 52 181470 1188.48 597 577 152.2
D 8 176 152208 996.22 597 577 152.2

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