ASTROSAT CZTI

Data Quality Report

Orbit 32907

Creation date: 2024-06-27T20:43:20.534350
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/AS1C07_005T01_9000004748_32907cztM0_level2.evt modeM0/AS1C07_005T01_9000004748_32907cztM0_level2_quad_clean.evt
Size (bytes)628,488,00096,701,760
Size599.4 MB 92.2 MB
Events in quadrant A2,851,617649,036
Events in quadrant B3,849,143652,652
Events in quadrant C3,421,879657,877
Events in quadrant D8,516,164559,978

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122083
B0151752
C0138342
D0294512

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5846120.205269%
B58462364.036948%
C58461452.480328%
D5846128121.912419%

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 7159 5847 1 1 0.01% 0.02%
B 7159 5847 139 139 1.94% 2.38%
C 7159 5847 106 106 1.48% 1.81%
D 7159 5847 1407 1407 19.65% 24.06%

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 14 63 208235 1533.73 672 659 135.3
A 13 6 17866 127.14 672 659 135.3
A 7 16 16515 117.16 672 659 135.3
B 5 200 459055 3647.66 665 648 125.7
B 5 172 458051 3639.67 665 648 125.7
B 0 219 187686 1488.31 665 648 125.7
C 0 10 340026 2246.85 652 657 151.0
C 4 254 177505 1170.85 652 657 151.0
C 14 67 160391 1057.55 652 657 151.0
D 8 195 2847766 17889.35 614 603 159.2
D 12 227 2105405 13224.93 614 603 159.2
D 10 203 352487 2210.96 614 603 159.2

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