ASTROSAT CZTI

Data Quality Report

Orbit 18608

Creation date: 2024-06-27T17:52:16.529185
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/AS1A05_104T03_9000002770_18608cztM0_level2.evt modeM0/AS1A05_104T03_9000002770_18608cztM0_level2_quad_clean.evt
Size (bytes)1,045,411,200167,356,800
Size997.0 MB 159.6 MB
Events in quadrant A6,954,1211,019,303
Events in quadrant B7,012,2561,045,289
Events in quadrant C7,407,4771,014,327
Events in quadrant D9,294,523976,773

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0303192
B0302432
C0314552
D0372682

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02980
B02980
C02980
D02980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A146711471.001977%
B146711511.029241%
C146722351.601690%
D146724903.339695%

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 15721 14673 35 35 0.22% 0.24%
B 15721 14672 7 7 0.04% 0.05%
C 15722 14674 31 31 0.20% 0.21%
D 15722 14674 368 368 2.34% 2.51%

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 214800 604.6 1734 1693 352.5
A 9 143 42447 115.62 1734 1693 352.5
A 13 254 22836 59.98 1734 1693 352.5
B 0 230 125177 374.38 1729 1685 329.9
B 12 111 41421 120.47 1729 1685 329.9
B 0 229 37311 108.01 1729 1685 329.9
C 3 233 617591 1578.35 1667 1677 390.2
C 14 238 257282 655.02 1667 1677 390.2
C 9 54 32122 78.02 1667 1677 390.2
D 1 52 2416191 5950.89 1679 1630 405.7
D 7 238 253133 619.85 1679 1630 405.7
D 5 222 106050 257.35 1679 1630 405.7

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