ASTROSAT CZTI

Data Quality Report

Orbit 25218

Creation date: 2024-06-27T19:15:12.264996
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/AS1A07_097T01_9000003692_25218cztM0_level2.evt modeM0/AS1A07_097T01_9000003692_25218cztM0_level2_quad_clean.evt
Size (bytes)653,126,40091,103,040
Size622.9 MB 86.9 MB
Events in quadrant A3,621,796603,364
Events in quadrant B6,500,031495,883
Events in quadrant C3,740,464583,918
Events in quadrant D5,429,055573,031

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152290
B0240340
C0154330
D0209540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7213861.192292%
B7214136918.976989%
C72141502.079290%
D72144356.029942%

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 9013 7215 0 0 0.00% 0.00%
B 9014 7215 853 853 9.46% 11.82%
C 9014 7216 0 0 0.00% 0.00%
D 9014 7216 246 246 2.73% 3.41%

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 11913 57.81 939 919 190.2
A 3 137 8672 40.77 939 919 190.2
A 0 226 8150 38.02 939 919 190.2
B 3 64 3141147 19846.99 825 806 158.2
B 7 219 47656 296.09 825 806 158.2
B 0 190 25897 158.58 825 806 158.2
C 14 238 142591 667.67 901 905 212.2
C 7 247 41942 193.38 901 905 212.2
C 2 16 28680 130.89 901 905 212.2
D 8 195 512756 2195.25 896 875 233.2
D 10 70 485489 2078.31 896 875 233.2
D 1 52 439158 1879.62 896 875 233.2

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