ASTROSAT CZTI

Data Quality Report

Orbit 18598

Creation date: 2024-06-27T17:52:10.016935
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_075T06_9000002766_18598cztM0_level2.evt modeM0/AS1A05_075T06_9000002766_18598cztM0_level2_quad_clean.evt
Size (bytes)496,143,36077,820,480
Size473.2 MB 74.2 MB
Events in quadrant A3,347,217485,495
Events in quadrant B3,449,669494,811
Events in quadrant C3,491,269480,104
Events in quadrant D4,314,896461,199

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141592
B0143842
C0144892
D0171562

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6231971.556732%
B62311041.669074%
C62311442.311026%
D62313195.119563%

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 7492 6231 2 2 0.03% 0.03%
B 7492 6231 8 8 0.11% 0.13%
C 7492 6231 0 0 0.00% 0.00%
D 7492 6231 242 242 3.23% 3.88%

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 13 254 10401 55.94 865 850 170.7
A 15 192 8446 44.49 865 850 170.7
A 0 226 7674 39.97 865 850 170.7
B 0 229 41468 251.2 863 842 161.7
B 12 18 23784 141.85 863 842 161.7
B 12 111 18512 109.26 863 842 161.7
C 14 238 133363 690.32 839 848 192.0
C 3 233 66598 342.52 839 848 192.0
C 13 61 5777 25.67 839 848 192.0
D 7 238 577929 2825.98 845 823 204.2
D 1 52 385079 1881.63 845 823 204.2
D 5 222 97007 470.99 845 823 204.2

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