ASTROSAT CZTI

Data Quality Report

Orbit 31747

Creation date: 2024-06-27T20:32:13.805140
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/AS1T04_034T01_9000004632_31747cztM0_level2.evt modeM0/AS1T04_034T01_9000004632_31747cztM0_level2_quad_clean.evt
Size (bytes)746,087,040103,158,720
Size711.5 MB 98.4 MB
Events in quadrant A6,474,359632,008
Events in quadrant B6,585,858674,588
Events in quadrant C4,416,714654,937
Events in quadrant D4,620,312648,944

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0241564
B0245482
C0177962
D0188512

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A736990612.294748%
B73704425.997286%
C73703434.654003%
D73701031.397558%

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 9109 7370 525 525 5.76% 7.12%
B 9110 7372 61 61 0.67% 0.83%
C 9110 7372 79 79 0.87% 1.07%
D 9110 7372 27 27 0.30% 0.37%

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 0 13 2951381 16034.29 912 894 184.0
A 13 254 12493 63.03 912 894 184.0
A 3 137 9197 45.12 912 894 184.0
B 6 159 2049412 11448.86 932 907 178.9
B 4 80 608049 3393.25 932 907 178.9
B 15 219 138843 770.91 932 907 178.9
C 0 10 646482 3049.74 904 911 211.7
C 14 238 144873 680.09 904 911 211.7
C 3 233 55696 258.81 904 911 211.7
D 8 195 843542 3816.28 927 903 220.8
D 1 52 100054 449.05 927 903 220.8
D 12 233 78873 353.12 927 903 220.8

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