ASTROSAT CZTI

Data Quality Report

Orbit 27986

Creation date: 2024-06-27T19:46:46.375627
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/AS1A10_065T03_9000004040_27986cztM0_level2.evt modeM0/AS1A10_065T03_9000004040_27986cztM0_level2_quad_clean.evt
Size (bytes)562,288,320110,001,600
Size536.2 MB 104.9 MB
Events in quadrant A3,711,187731,576
Events in quadrant B3,738,028718,405
Events in quadrant C3,919,350671,302
Events in quadrant D5,139,605676,173

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159710
B0159980
C0166300
D0203100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7668610.795514%
B7669991.290911%
C76681291.682316%
D76682773.612415%

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 8263 7670 0 0 0.00% 0.00%
B 8264 7670 1 1 0.01% 0.01%
C 8263 7670 16 16 0.19% 0.21%
D 8263 7670 172 172 2.08% 2.24%

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 11054 51.96 961 944 194.6
A 3 137 9683 44.92 961 944 194.6
A 8 192 8214 37.37 961 944 194.6
B 12 111 23831 122.39 946 919 187.2
B 11 111 22053 112.89 946 919 187.2
B 14 111 20896 106.71 946 919 187.2
C 10 22 220698 1024.12 904 908 214.6
C 14 238 143528 664.54 904 908 214.6
C 3 233 20153 89.67 904 908 214.6
D 1 52 1342379 6224.35 910 889 215.5
D 8 195 273425 1264.53 910 889 215.5
D 7 80 48000 218.59 910 889 215.5

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