ASTROSAT CZTI

Data Quality Report

Orbit 27763

Creation date: 2024-06-27T19:44:05.115107
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/AS1A09_038T46_9000004002_27763cztM0_level2.evt modeM0/AS1A09_038T46_9000004002_27763cztM0_level2_quad_clean.evt
Size (bytes)304,151,04074,715,840
Size290.1 MB 71.3 MB
Events in quadrant A1,832,109525,388
Events in quadrant B3,136,460490,346
Events in quadrant C1,839,766505,419
Events in quadrant D2,159,214488,588

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A076110
B0115990
C075720
D087170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3574340.951315%
B357458416.340235%
C3573631.763224%
D3573531.483347%

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 4919 3575 4 4 0.08% 0.11%
B 4918 3574 485 485 9.86% 13.57%
C 4918 3574 0 0 0.00% 0.00%
D 4918 3574 42 42 0.85% 1.18%

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 13 248 15699 162.2 466 458 94.0
A 8 192 8235 82.76 466 458 94.0
A 14 235 7930 79.52 466 458 94.0
B 3 64 1172660 14459.73 435 426 81.1
B 10 245 185680 2285.14 435 426 81.1
B 0 190 31449 382.67 435 426 81.1
C 14 238 72300 687.77 448 450 104.5
C 3 233 14221 131.82 448 450 104.5
C 10 22 5708 50.33 448 450 104.5
D 1 52 370991 3492.22 446 434 106.1
D 2 250 53404 499.2 446 434 106.1
D 7 69 28718 266.56 446 434 106.1

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