ASTROSAT CZTI

Data Quality Report

Orbit 24964

Creation date: 2024-06-27T19:12:02.055955
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/AS1T03_200T01_9000003654_24964cztM0_level2.evt modeM0/AS1T03_200T01_9000003654_24964cztM0_level2_quad_clean.evt
Size (bytes)459,472,320124,793,280
Size438.2 MB 119.0 MB
Events in quadrant A2,975,745844,561
Events in quadrant B3,315,877855,526
Events in quadrant C3,336,067825,819
Events in quadrant D3,848,677803,395

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132351
B0142651
C0143651
D0158541

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6456130.201363%
B6457751.161530%
C6457681.053121%
D6457520.805328%

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 7501 6457 0 0 0.00% 0.00%
B 7502 6458 28 28 0.37% 0.43%
C 7502 6458 1 1 0.01% 0.02%
D 7502 6458 18 18 0.24% 0.28%

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 10655 63.98 770 753 154.8
A 3 137 6691 38.36 770 753 154.8
A 0 226 6669 38.22 770 753 154.8
B 5 172 81128 552.97 769 748 145.4
B 3 64 53142 360.44 769 748 145.4
B 0 190 40459 273.19 769 748 145.4
C 7 247 241051 1381.66 750 755 173.9
C 14 238 119032 680.07 750 755 173.9
C 2 16 20691 114.63 750 755 173.9
D 8 195 455783 2499.35 756 733 182.1
D 1 52 448658 2460.22 756 733 182.1
D 2 234 26715 142.71 756 733 182.1

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