ASTROSAT CZTI

Data Quality Report

Orbit 08023

Creation date: 2024-06-27T15:27:00.611397
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/AS1G06_154T02_9000001102_08023cztM0_level2.evt modeM0/AS1G06_154T02_9000001102_08023cztM0_level2_quad_clean.evt
Size (bytes)492,624,00099,527,040
Size469.8 MB 94.9 MB
Events in quadrant A3,472,331613,407
Events in quadrant B3,603,583630,401
Events in quadrant C3,445,107631,138
Events in quadrant D3,874,906603,858

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157781
B0159170
C0157520
D0172260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7696901.169439%
B76961361.767152%
C7696230.298857%
D76961081.403326%

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 7696 7696 0 0 0.00% 0.00%
B 7696 7696 9 9 0.12% 0.12%
C 7696 7696 0 0 0.00% 0.00%
D 7696 7696 65 65 0.84% 0.84%

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 14 14021 70.9 897 878 185.4
A 0 226 8419 40.68 897 878 185.4
A 12 194 8061 38.75 897 878 185.4
B 5 250 48662 270.79 905 880 176.5
B 5 255 20800 112.89 905 880 176.5
B 12 111 20357 110.38 905 880 176.5
C 13 61 6855 28.8 882 885 207.3
C 8 222 5296 21.28 882 885 207.3
C 3 202 2164 6.17 882 885 207.3
D 2 14 290331 1378.74 870 847 210.0
D 1 52 248676 1180.35 870 847 210.0
D 14 34 35605 165.54 870 847 210.0

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