ASTROSAT CZTI

Data Quality Report

Orbit 17675

Creation date: 2024-06-27T17:39:23.165131
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/AS1A05_208T01_9000002614_17675cztM0_level2.evt modeM0/AS1A05_208T01_9000002614_17675cztM0_level2_quad_clean.evt
Size (bytes)474,039,36094,086,720
Size452.1 MB 89.7 MB
Events in quadrant A3,358,130599,960
Events in quadrant B3,550,608616,180
Events in quadrant C3,785,117589,466
Events in quadrant D3,208,181577,532

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139762
B0147512
C0153812
D0139612

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6686560.837571%
B66861311.959318%
C66861031.540532%
D6686470.702961%

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 7746 6687 0 0 0.00% 0.00%
B 7746 6687 69 69 0.89% 1.03%
C 7746 6687 0 0 0.00% 0.00%
D 7746 6687 9 9 0.12% 0.13%

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 14 237 125811 736.39 838 821 169.7
A 4 2 9439 50.77 838 821 169.7
A 0 226 7299 38.17 838 821 169.7
B 10 245 273081 1706.5 830 809 159.5
B 12 111 18561 111.26 830 809 159.5
B 11 111 16231 96.66 830 809 159.5
C 3 233 504780 2646.63 808 813 190.4
C 14 238 124556 649.85 808 813 190.4
C 13 61 5697 25.65 808 813 190.4
D 1 52 63151 308.66 822 800 202.0
D 2 234 26820 128.81 822 800 202.0
D 10 70 18432 87.28 822 800 202.0

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