ASTROSAT CZTI

Data Quality Report

Orbit 40827

Creation date: 2024-06-27T22:21:02.622428
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_104T02_9000005572_40827cztM0_level2.fits modeM0/AS1A12_104T02_9000005572_40827cztM0_level2_quad_clean.evt
Size (bytes)369,074,880104,149,440
Size352.0 MB 99.3 MB
Events in quadrant A3,509,123696,014
Events in quadrant B3,090,617713,293
Events in quadrant C3,216,677678,576
Events in quadrant D3,347,601618,970

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139193
B0135582
C0135212
D0145512

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6395220.344019%
B6395360.562940%
C6395530.828772%
D63951362.126661%

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 9531 6397 14 14 0.15% 0.22%
B 9531 6397 8 8 0.08% 0.13%
C 9531 6397 47 47 0.49% 0.73%
D 9531 6397 112 112 1.18% 1.75%

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 10 83 565430 3889.59 709 695 145.2
A 15 191 113860 779.42 709 695 145.2
A 13 248 64381 438.64 709 695 145.2
B 0 190 254794 1833.51 706 687 138.6
B 0 230 24808 174.05 706 687 138.6
B 5 255 23687 165.96 706 687 138.6
C 15 214 272997 1681.38 691 695 162.0
C 0 10 149350 917.9 691 695 162.0
C 14 254 88981 545.14 691 695 162.0
D 13 249 351858 2090.33 686 664 168.0
D 2 249 185380 1099.44 686 664 168.0
D 12 233 67370 397.04 686 664 168.0

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