ASTROSAT CZTI

Data Quality Report

Orbit 41493

Creation date: 2024-06-27T22:29:46.785741
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/AS1A12_035T02_9000005676_41493cztM0_level2.fits modeM0/AS1A12_035T02_9000005676_41493cztM0_level2_quad_clean.evt
Size (bytes)334,520,64095,800,320
Size319.0 MB 91.4 MB
Events in quadrant A3,080,171642,489
Events in quadrant B2,596,073654,548
Events in quadrant C3,268,807614,256
Events in quadrant D2,983,797581,560

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125863
B0118362
C0132992
D0127942

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5825110.188841%
B5825110.188841%
C58251763.021459%
D5825520.892704%

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 9203 5827 2 2 0.02% 0.03%
B 9203 5827 2 2 0.02% 0.03%
C 9203 5827 159 159 1.73% 2.73%
D 9203 5827 52 52 0.57% 0.89%

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 552847 4194.75 642 630 131.6
A 2 79 22531 166.36 642 630 131.6
A 13 248 18382 134.85 642 630 131.6
B 0 190 54004 432.23 636 618 123.5
B 0 245 19317 151.39 636 618 123.5
B 12 111 15770 122.68 636 618 123.5
C 0 10 401756 2767.45 622 626 144.9
C 15 214 244441 1682.11 622 626 144.9
C 14 254 129652 890.17 622 626 144.9
D 12 6 183629 1200.43 628 612 152.5
D 1 52 101761 663.45 628 612 152.5
D 2 249 81662 531.61 628 612 152.5

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