ASTROSAT CZTI

Data Quality Report

Orbit 21598

Creation date: 2024-06-27T18:30:01.852363
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_094T01_9000003204_21598cztM0_level2.evt modeM0/AS1A05_094T01_9000003204_21598cztM0_level2_quad_clean.evt
Size (bytes)437,898,24085,314,240
Size417.6 MB 81.4 MB
Events in quadrant A2,957,491547,633
Events in quadrant B3,104,932556,181
Events in quadrant C2,962,738535,464
Events in quadrant D3,819,699516,108

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126231
B0131011
C0126861
D0154031

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6130671.092985%
B6130831.353997%
C6130861.402936%
D61301863.034258%

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 7190 6131 0 0 0.00% 0.00%
B 7190 6131 2 2 0.03% 0.03%
C 7190 6131 0 0 0.00% 0.00%
D 7190 6131 107 107 1.49% 1.75%

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 8013 47.44 767 752 153.1
A 0 226 6628 38.39 767 752 153.1
A 3 137 6296 36.22 767 752 153.1
B 3 64 71523 490.48 760 741 144.3
B 0 229 22411 150.16 760 741 144.3
B 0 190 17765 117.97 760 741 144.3
C 14 238 115555 675.49 729 733 170.0
C 13 61 5120 25.81 729 733 170.0
C 4 175 3601 16.87 729 733 170.0
D 1 52 874146 4902.7 732 710 178.2
D 2 136 95464 531.87 732 710 178.2
D 14 35 30992 169.98 732 710 178.2

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