ASTROSAT CZTI

Data Quality Report

Orbit 46795

Creation date: 2024-06-27T23:27:44.674202
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/AS1A13_053T01_9000006266_46795cztM0_level2.fits modeM0/AS1A13_053T01_9000006266_46795cztM0_level2_quad_clean.evt
Size (bytes)438,361,92096,128,640
Size418.1 MB 91.7 MB
Events in quadrant A5,542,801648,014
Events in quadrant B2,748,221679,492
Events in quadrant C2,848,145639,008
Events in quadrant D4,628,432531,585

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0201781
B0122574
C0128252
D0179761

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59082634.451591%
B5906671.134440%
C5908791.337170%
D590872312.237644%

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 7018 5909 67 67 0.95% 1.13%
B 7018 5907 4 4 0.06% 0.07%
C 7018 5908 57 57 0.81% 0.96%
D 7018 5909 687 687 9.79% 11.63%

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 10 83 2819303 21014.78 651 636 134.1
A 13 248 115885 859.25 651 636 134.1
A 15 235 39302 288.28 651 636 134.1
B 4 171 31920 243.24 658 637 128.6
B 0 198 24365 184.5 658 637 128.6
B 5 172 24097 182.41 658 637 128.6
C 14 254 315548 2108.04 640 642 149.4
C 3 233 24211 157.77 640 642 149.4
C 14 67 5609 33.25 640 642 149.4
D 13 249 1913992 12711.24 610 589 150.5
D 1 52 241209 1598.5 610 589 150.5
D 2 37 39510 258.56 610 589 150.5

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