ASTROSAT CZTI

Data Quality Report

Orbit 00779

Creation date: 2024-06-27T14:02:50.031865
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/AS1P01_010T01_9000000108_00779cztM0_level2.evt modeM0/AS1P01_010T01_9000000108_00779cztM0_level2_quad_clean.evt
Size (bytes)1,001,004,48098,763,840
Size954.6 MB 94.2 MB
Events in quadrant A7,429,446652,990
Events in quadrant B7,897,655652,963
Events in quadrant C7,348,840629,388
Events in quadrant D7,222,013616,753

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0264930
B0279420
C0263640
D0259670

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6298300.476342%
B6298410.651000%
C6298641.016196%
D6298600.952683%

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 7478 6299 185 185 2.47% 2.94%
B 7478 6299 249 249 3.33% 3.95%
C 7478 6299 245 245 3.28% 3.89%
D 7478 6299 231 231 3.09% 3.67%

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 15 17 24583 48.94 1909 1925 463.0
A 8 192 23457 46.51 1909 1925 463.0
A 15 171 22325 44.06 1909 1925 463.0
B 5 191 129056 273.22 1989 1997 465.0
B 0 157 47173 97.14 1989 1997 465.0
B 0 182 32652 65.92 1989 1997 465.0
C 10 17 257696 523.18 1759 1817 489.1
C 10 207 104792 210.55 1759 1817 489.1
C 15 241 56413 111.63 1759 1817 489.1
D 12 188 200310 373.56 1709 1766 531.5
D 13 25 187407 349.28 1709 1766 531.5
D 1 4 175801 327.45 1709 1766 531.5

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