ASTROSAT CZTI

Data Quality Report

Orbit 08741

Creation date: 2024-06-27T15:36:35.367369
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/AS1G07_013T02_9000001216_08741cztM0_level2.evt modeM0/AS1G07_013T02_9000001216_08741cztM0_level2_quad_clean.evt
Size (bytes)426,945,600103,717,440
Size407.2 MB 98.9 MB
Events in quadrant A3,074,296681,461
Events in quadrant B3,038,815694,502
Events in quadrant C3,280,331685,024
Events in quadrant D3,120,893653,241

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131523
B0130452
C0137422
D0134442

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6116370.604971%
B6116380.621321%
C6116801.308044%
D6116661.079137%

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 7411 6116 1 1 0.01% 0.02%
B 7411 6117 2 2 0.03% 0.03%
C 7411 6116 31 31 0.42% 0.51%
D 7411 6116 16 16 0.22% 0.26%

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 13 251 103520 675.76 756 740 152.1
A 13 14 51042 330.72 756 740 152.1
A 5 16 7624 45.26 756 740 152.1
B 0 219 40006 279.54 760 741 140.5
B 0 230 13358 89.82 760 741 140.5
B 0 214 13307 89.46 760 741 140.5
C 4 254 352426 2080.87 744 749 169.0
C 14 234 10886 59.98 744 749 169.0
C 13 61 5888 30.41 744 749 169.0
D 2 152 83953 470.6 743 720 176.9
D 1 52 82034 459.75 743 720 176.9
D 7 71 51551 287.4 743 720 176.9

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