ASTROSAT CZTI

Data Quality Report

Orbit 25047

Creation date: 2024-06-27T19:13:11.829222
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_206T01_9000003672_25047cztM0_level2.evt modeM0/AS1T03_206T01_9000003672_25047cztM0_level2_quad_clean.evt
Size (bytes)617,762,88094,901,760
Size589.1 MB 90.5 MB
Events in quadrant A3,871,175595,256
Events in quadrant B4,097,287603,871
Events in quadrant C4,111,520568,421
Events in quadrant D6,089,826553,748

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165702
B0171862
C0171942
D0233992

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79513324.175575%
B79514025.055968%
C79524165.231388%
D79525206.539235%

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 8351 7954 0 0 0.00% 0.00%
B 8351 7954 32 32 0.38% 0.40%
C 8352 7955 30 30 0.36% 0.38%
D 8352 7955 175 175 2.10% 2.20%

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 11 208 32665 156.1 995 968 203.1
A 13 254 12390 56.25 995 968 203.1
A 3 137 9239 40.73 995 968 203.1
B 3 64 123338 637.23 984 957 192.1
B 10 249 50937 260.24 984 957 192.1
B 0 245 24782 124.06 984 957 192.1
C 2 16 182896 813.3 947 951 223.7
C 14 238 149208 662.71 947 951 223.7
C 7 247 71780 316.61 947 951 223.7
D 8 195 1699406 7315.97 953 925 232.2
D 1 52 526134 2262.27 953 925 232.2
D 12 233 140160 599.74 953 925 232.2

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