ASTROSAT CZTI

Data Quality Report

Orbit 27309

Creation date: 2024-06-27T19:38:42.321185
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/AS1C05_013T06_9000003920_27309cztM0_level2.evt modeM0/AS1C05_013T06_9000003920_27309cztM0_level2_quad_clean.evt
Size (bytes)1,129,593,600290,718,720
Size1.1 GB 277.3 MB
Events in quadrant A7,129,2391,959,381
Events in quadrant B7,341,7311,987,738
Events in quadrant C7,168,1671,917,365
Events in quadrant D11,511,2401,860,535

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0319210
B0324270
C0318750
D0454590

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15668440.280827%
B15668750.478683%
C156681300.829717%
D156696414.090880%

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 16803 15670 8 8 0.05% 0.05%
B 16803 15670 23 23 0.14% 0.15%
C 16803 15670 1 1 0.01% 0.01%
D 16804 15671 568 568 3.38% 3.62%

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 13 248 51425 135.43 1828 1786 366.5
A 13 254 26881 68.47 1828 1786 366.5
A 3 137 17485 42.83 1828 1786 366.5
B 10 245 77259 221.67 1815 1769 340.5
B 7 205 62954 179.67 1815 1769 340.5
B 12 111 42213 118.76 1815 1769 340.5
C 14 238 282744 682.95 1757 1764 411.4
C 2 16 18147 39.82 1757 1764 411.4
C 8 128 13096 27.54 1757 1764 411.4
D 1 52 4331672 10273.5 1742 1700 421.5
D 2 250 164664 386.66 1742 1700 421.5
D 13 168 107930 252.05 1742 1700 421.5

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