ASTROSAT CZTI

Data Quality Report

Orbit 21586

Creation date: 2024-06-27T18:29:53.952416
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/AS1A06_002T02_9000003204_21586cztM0_level2.evt modeM0/AS1A06_002T02_9000003204_21586cztM0_level2_quad_clean.evt
Size (bytes)383,624,64071,861,760
Size365.9 MB 68.5 MB
Events in quadrant A3,749,986451,992
Events in quadrant B2,559,379470,901
Events in quadrant C2,386,394455,899
Events in quadrant D2,588,009452,556

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143400
B0106840
C0102100
D0110720

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49073948.029346%
B49082154.380603%
C49082114.299104%
D49061974.015491%

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 4996 4910 151 151 3.02% 3.08%
B 4997 4911 2 2 0.04% 0.04%
C 5001 4912 0 0 0.00% 0.00%
D 4996 4909 32 32 0.64% 0.65%

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 15 236 1422456 11590.11 603 592 122.7
A 13 254 6872 51.19 603 592 122.7
A 3 137 5343 38.72 603 592 122.7
B 0 230 77387 652.73 609 593 117.7
B 3 64 32106 267.85 609 593 117.7
B 0 189 21013 173.57 609 593 117.7
C 14 238 90836 645.67 587 590 139.8
C 13 61 4240 26.11 587 590 139.8
C 8 128 3911 23.76 587 590 139.8
D 7 38 114789 779.84 597 578 146.5
D 1 52 55758 376.77 597 578 146.5
D 2 136 49437 333.61 597 578 146.5

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