ASTROSAT CZTI

Data Quality Report

Orbit 41151

Creation date: 2024-06-27T22:25:06.126968
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/AS1A12_025T12_9000005604_41151cztM0_level2.fits modeM0/AS1A12_025T12_9000005604_41151cztM0_level2_quad_clean.evt
Size (bytes)374,336,64089,487,360
Size357.0 MB 85.3 MB
Events in quadrant A2,977,978614,149
Events in quadrant B4,460,125557,335
Events in quadrant C3,348,602591,404
Events in quadrant D2,633,183554,366

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120893
B0167542
C0132452
D0119082

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5610100.178253%
B561065111.604278%
C5610791.408200%
D5610140.249554%

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 8807 5612 3 3 0.03% 0.05%
B 8807 5612 545 545 6.19% 9.71%
C 8807 5612 65 65 0.74% 1.16%
D 8807 5612 9 9 0.10% 0.16%

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 518766 4026.32 623 609 128.7
A 12 189 22281 168.4 623 609 128.7
A 2 79 13918 103.42 623 609 128.7
B 7 202 1804876 15663.32 588 570 115.2
B 0 245 166352 1439.16 588 570 115.2
B 5 255 165155 1428.77 588 570 115.2
C 9 54 469429 3317.07 603 607 141.3
C 15 214 240826 1699.63 603 607 141.3
C 14 254 140584 990.38 603 607 141.3
D 2 249 122233 822.36 603 587 147.9
D 2 16 100985 678.72 603 587 147.9
D 5 32 37786 251.47 603 587 147.9

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