ASTROSAT CZTI

Data Quality Report

Orbit 17737

Creation date: 2024-06-27T17:40:14.239829
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/AS1T03_070T01_9000002632_17737cztM0_level2.evt modeM0/AS1T03_070T01_9000002632_17737cztM0_level2_quad_clean.evt
Size (bytes)534,579,84096,791,040
Size509.8 MB 92.3 MB
Events in quadrant A3,814,007603,390
Events in quadrant B3,989,658609,837
Events in quadrant C3,748,953589,741
Events in quadrant D4,106,384585,259

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165572
B0168782
C0162042
D0174882

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78083063.919057%
B78093204.097836%
C78092893.700858%
D78093003.841721%

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 8208 7810 26 26 0.32% 0.33%
B 8209 7811 17 17 0.21% 0.22%
C 8209 7812 0 0 0.00% 0.00%
D 8209 7811 60 60 0.73% 0.77%

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 15 174 156104 803.55 942 918 193.1
A 14 237 32095 161.43 942 918 193.1
A 0 226 8207 37.74 942 918 193.1
B 7 220 81379 444.19 936 907 181.2
B 0 219 74640 406.99 936 907 181.2
B 10 245 62819 341.74 936 907 181.2
C 14 238 138545 647.2 902 905 212.7
C 3 233 36702 168.32 902 905 212.7
C 5 218 30399 138.68 902 905 212.7
D 1 52 303128 1251.8 913 895 241.4
D 7 223 223073 920.22 913 895 241.4
D 2 234 34953 141.06 913 895 241.4

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