ASTROSAT CZTI

Data Quality Report

Orbit 11925

Creation date: 2024-06-27T16:20:08.166651
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/AS1A04_088T05_9000001764_11925cztM0_level2.evt modeM0/AS1A04_088T05_9000001764_11925cztM0_level2_quad_clean.evt
Size (bytes)503,000,64093,355,200
Size479.7 MB 89.0 MB
Events in quadrant A3,771,507604,470
Events in quadrant B3,807,115599,494
Events in quadrant C3,098,071603,619
Events in quadrant D4,122,407572,795

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154333
B0154912
C0134572
D0163772

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64071171.826128%
B64072113.293273%
C6407661.030123%
D64072153.355705%

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 7618 6408 4 4 0.05% 0.06%
B 7618 6408 85 85 1.12% 1.33%
C 7618 6408 14 14 0.18% 0.22%
D 7618 6408 163 163 2.14% 2.54%

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 8 15 225360 1383.12 803 785 162.4
A 1 162 161345 988.86 803 785 162.4
A 1 178 90366 551.71 803 785 162.4
B 4 239 461399 3080.49 796 778 149.5
B 0 85 64246 424.45 796 778 149.5
B 15 204 55971 369.11 796 778 149.5
C 0 207 47817 262.9 781 787 178.9
C 13 61 5955 28.89 781 787 178.9
C 14 234 3618 15.83 781 787 178.9
D 1 52 673981 3651.49 777 757 184.4
D 8 195 264297 1429.41 777 757 184.4
D 5 222 78216 420.13 777 757 184.4

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