ASTROSAT CZTI

Data Quality Report

Orbit 26131

Creation date: 2024-06-27T19:25:10.819314
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/AS1A09_138T04_9000003776_26131cztM0_level2.evt modeM0/AS1A09_138T04_9000003776_26131cztM0_level2_quad_clean.evt
Size (bytes)633,199,68086,339,520
Size603.9 MB 82.3 MB
Events in quadrant A6,438,820527,929
Events in quadrant B3,653,102551,347
Events in quadrant C4,156,768519,565
Events in quadrant D4,452,534526,319

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240990
B0151540
C0167560
D0177210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70136599.396834%
B70142984.248646%
C70144236.030796%
D70134085.817767%

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 7148 7013 302 302 4.22% 4.31%
B 7149 7014 2 2 0.03% 0.03%
C 7149 7014 105 105 1.47% 1.50%
D 7148 7013 186 186 2.60% 2.65%

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 3087368 17750.48 868 849 173.9
A 13 254 11176 59.39 868 849 173.9
A 3 137 8292 42.8 868 849 173.9
B 0 229 172753 1002.3 875 849 171.5
B 0 190 46065 263.64 875 849 171.5
B 12 111 20818 116.43 875 849 171.5
C 2 16 698221 3524.41 838 843 197.9
C 14 238 132593 665.84 838 843 197.9
C 3 233 54386 270.6 838 843 197.9
D 1 52 1078719 5220.22 858 836 206.5
D 12 233 101598 487.99 858 836 206.5
D 2 234 29755 140.06 858 836 206.5

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