ASTROSAT CZTI

Data Quality Report

Orbit 00384

Creation date: 2024-06-27T13:59:14.745011
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_161T05_9000000058_00384cztM0_level2.evt modeM0/AS1P01_161T05_9000000058_00384cztM0_level2_quad_clean.evt
Size (bytes)963,472,32034,084,800
Size918.8 MB 32.5 MB
Events in quadrant A6,727,133176,547
Events in quadrant B6,527,845172,792
Events in quadrant C7,483,820180,271
Events in quadrant D8,088,015128,978

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0237673
B0231712
C0259652
D0278932

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5323771.446553%
B5323100.187864%
C5323651.221116%
D53234869.130190%

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 7387 5324 240 240 3.25% 4.51%
B 7387 5324 96 96 1.30% 1.80%
C 7387 5324 837 837 11.33% 15.72%
D 7387 5324 998 998 13.51% 18.75%

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 69 267384 726.39 1629 1615 365.9
A 0 238 69664 185.99 1629 1615 365.9
A 12 243 37498 98.07 1629 1615 365.9
B 15 82 42428 103.76 1641 1652 393.0
B 0 23 41746 102.02 1641 1652 393.0
B 4 170 35066 85.03 1641 1652 393.0
C 1 1 1515805 3664.57 1472 1523 413.2
C 3 159 173741 416.77 1472 1523 413.2
C 9 98 7155 13.63 1472 1523 413.2
D 13 7 2055544 4995.56 1380 1414 411.2
D 10 102 291804 706.22 1380 1414 411.2
D 1 5 117950 283.41 1380 1414 411.2

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