ASTROSAT CZTI

Data Quality Report

Orbit 26860

Creation date: 2024-06-27T19:33:45.261164
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_26860cztM0_level2.evt modeM0/AS1T03_224T01_9000003868_26860cztM0_level2_quad_clean.evt
Size (bytes)510,955,20093,263,040
Size487.3 MB 88.9 MB
Events in quadrant A4,459,491591,272
Events in quadrant B3,381,561616,080
Events in quadrant C3,154,294591,244
Events in quadrant D4,026,892561,250

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177170
B0142710
C0136200
D0165360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66671412.114894%
B6667630.944953%
C6667560.839958%
D66672373.554822%

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 7627 6668 76 76 1.00% 1.14%
B 7627 6668 25 25 0.33% 0.37%
C 7627 6668 0 0 0.00% 0.00%
D 7627 6668 189 189 2.48% 2.83%

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 1326630 8131.3 805 789 163.1
A 6 16 25004 148.51 805 789 163.1
A 13 254 11622 66.44 805 789 163.1
B 10 246 77380 491.93 811 790 155.7
B 3 64 67270 427.0 811 790 155.7
B 0 189 31783 199.07 811 790 155.7
C 14 238 123510 670.1 776 780 183.2
C 13 61 5362 25.02 776 780 183.2
C 15 208 4280 19.11 776 780 183.2
D 7 80 417596 2320.27 765 749 179.7
D 1 52 334596 1858.27 765 749 179.7
D 2 250 283005 1571.11 765 749 179.7

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