ASTROSAT CZTI

Data Quality Report

Orbit 40591

Creation date: 2024-06-27T22:17:56.914610
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_054T02_9000005550_40591cztM0_level2.fits modeM0/AS1A12_054T02_9000005550_40591cztM0_level2_quad_clean.evt
Size (bytes)324,250,56085,654,080
Size309.2 MB 81.7 MB
Events in quadrant A2,778,702611,492
Events in quadrant B2,738,192621,594
Events in quadrant C2,457,834587,464
Events in quadrant D3,639,228424,578

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110313
B0111162
C0101552
D0142042

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A497480.160836%
B4974931.869723%
C497490.180941%
D4974123924.909530%

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 7097 4975 4 4 0.06% 0.08%
B 7097 4975 77 77 1.08% 1.55%
C 7097 4975 5 5 0.07% 0.10%
D 7096 4974 330 330 4.65% 6.63%

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 481221 4066.2 580 570 118.2
A 2 79 25137 207.83 580 570 118.2
A 3 1 15781 128.68 580 570 118.2
B 5 255 245535 2238.11 571 557 109.5
B 0 190 145695 1325.97 571 557 109.5
B 3 112 76437 693.24 571 557 109.5
C 15 214 234341 1813.71 556 560 128.9
C 14 254 26929 204.57 556 560 128.9
C 0 10 13788 102.62 556 560 128.9
D 12 227 1154904 9594.04 486 473 120.3
D 12 191 212168 1759.32 486 473 120.3
D 13 249 86675 716.39 486 473 120.3

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