ASTROSAT CZTI

Data Quality Report

Orbit 10464

Creation date: 2024-06-27T15:59:33.065759
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/AS1A03_126T01_9000001512_10464cztM0_level2.evt modeM0/AS1A03_126T01_9000001512_10464cztM0_level2_quad_clean.evt
Size (bytes)501,255,360102,271,680
Size478.0 MB 97.5 MB
Events in quadrant A3,590,637659,969
Events in quadrant B3,798,247682,372
Events in quadrant C3,259,916672,566
Events in quadrant D4,083,674622,083

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148653
B0154732
C0138402
D0163272

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6602180.272645%
B66021772.681006%
C6602280.424114%
D66021301.969100%

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 7907 6604 2 2 0.03% 0.03%
B 7907 6604 117 117 1.48% 1.77%
C 7907 6603 3 3 0.04% 0.05%
D 7907 6604 89 89 1.13% 1.35%

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 13 251 338430 2065.16 813 796 163.5
A 3 80 73851 446.85 813 796 163.5
A 1 162 21748 128.15 813 796 163.5
B 4 239 519331 3391.77 819 801 152.9
B 0 214 46395 298.24 819 801 152.9
B 0 187 23718 149.9 819 801 152.9
C 14 234 78414 414.31 813 818 187.3
C 13 61 6031 27.83 813 818 187.3
C 14 67 6014 27.74 813 818 187.3
D 8 195 477410 2544.64 788 768 187.3
D 1 52 259346 1380.47 788 768 187.3
D 1 20 188876 1004.25 788 768 187.3

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