ASTROSAT CZTI

Data Quality Report

Orbit 12239

Creation date: 2024-06-27T16:24:17.528150
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/AS1C03_014T03_9000001808_12239cztM0_level2.evt modeM0/AS1C03_014T03_9000001808_12239cztM0_level2_quad_clean.evt
Size (bytes)1,407,041,280281,105,280
Size1.3 GB 268.1 MB
Events in quadrant A10,005,6201,902,010
Events in quadrant B13,116,6261,831,544
Events in quadrant C7,529,2011,897,039
Events in quadrant D10,883,0741,780,634

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0404104
B0497553
C0337123
D0431383

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03260
B03260
C03260
D03260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A159832871.795658%
B15983170110.642558%
C159831280.800851%
D159839275.799912%

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 18004 15985 32 32 0.18% 0.20%
B 18004 15985 1010 1010 5.61% 6.32%
C 18004 15986 60 60 0.33% 0.38%
D 18004 15986 764 764 4.24% 4.78%

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 13 251 1347379 3643.83 1828 1787 369.3
A 8 15 460566 1242.36 1828 1787 369.3
A 1 162 394394 1063.17 1828 1787 369.3
B 4 206 3742053 11358.17 1764 1720 329.3
B 4 239 1588517 4818.58 1764 1720 329.3
B 3 64 483494 1462.99 1764 1720 329.3
C 15 208 463104 1124.66 1783 1786 410.2
C 5 112 54446 128.38 1783 1786 410.2
C 4 175 24536 55.46 1783 1786 410.2
D 10 199 1917165 4580.23 1744 1691 418.2
D 1 52 1388672 3316.51 1744 1691 418.2
D 13 249 278760 662.52 1744 1691 418.2

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