ASTROSAT CZTI

Data Quality Report

Orbit 40067

Creation date: 2024-06-27T22:11:55.421336
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_054T03_9000005516_40067cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_40067cztM0_level2_quad_clean.evt
Size (bytes)357,563,52095,022,720
Size341.0 MB 90.6 MB
Events in quadrant A2,899,676635,448
Events in quadrant B2,502,443665,257
Events in quadrant C4,197,120622,219
Events in quadrant D3,209,822570,838

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121183
B0111922
C0161572
D0134382

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5481190.346652%
B548190.164204%
C54812364.305784%
D54811773.229338%

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 9035 5483 5 5 0.06% 0.09%
B 9035 5483 1 1 0.01% 0.02%
C 9035 5483 224 224 2.48% 4.09%
D 9035 5483 155 155 1.72% 2.83%

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 451195 3626.75 611 600 124.2
A 7 3 26028 204.66 611 600 124.2
A 12 189 20202 157.77 611 600 124.2
B 15 201 50805 420.69 615 598 119.3
B 4 171 20950 170.53 615 598 119.3
B 12 111 14987 120.57 615 598 119.3
C 9 187 1542159 11047.97 598 603 139.5
C 15 214 224515 1604.72 598 603 139.5
C 14 254 50884 360.35 598 603 139.5
D 2 250 200506 1386.63 594 577 144.2
D 12 227 191973 1327.45 594 577 144.2
D 2 153 183611 1269.46 594 577 144.2

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