ASTROSAT CZTI

Data Quality Report

Orbit 26853

Creation date: 2024-06-27T19:33:41.351266
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_224T01_9000003868_26853cztM0_level2.evt modeM0/AS1T03_224T01_9000003868_26853cztM0_level2_quad_clean.evt
Size (bytes)576,368,64088,421,760
Size549.7 MB 84.3 MB
Events in quadrant A4,929,898549,933
Events in quadrant B3,987,394567,614
Events in quadrant C3,462,857557,034
Events in quadrant D4,624,921539,422

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190130
B0157410
C0140770
D0180020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66452563.852521%
B66452533.807374%
C66451512.272385%
D66453495.252069%

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 7655 6645 92 92 1.20% 1.38%
B 7655 6645 84 84 1.10% 1.26%
C 7655 6645 0 0 0.00% 0.00%
D 7655 6645 251 251 3.28% 3.78%

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 0 13 1524100 8722.03 871 855 174.6
A 12 96 48801 274.54 871 855 174.6
A 13 254 9690 50.59 871 855 174.6
B 0 189 356389 2149.92 871 848 165.4
B 10 246 131774 791.7 871 848 165.4
B 15 33 49443 293.85 871 848 165.4
C 14 238 138394 692.12 853 859 198.7
C 13 61 5767 24.7 853 859 198.7
C 3 202 1979 5.64 853 859 198.7
D 1 52 879033 4496.4 837 821 195.3
D 7 80 292062 1491.14 837 821 195.3
D 11 176 160024 815.11 837 821 195.3

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