ASTROSAT CZTI

Data Quality Report

Orbit 26353

Creation date: 2024-06-27T19:28:06.644357
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_143T05_9000003804_26353cztM0_level2.evt modeM0/AS1A09_143T05_9000003804_26353cztM0_level2_quad_clean.evt
Size (bytes)595,189,44085,138,560
Size567.6 MB 81.2 MB
Events in quadrant A2,952,434565,174
Events in quadrant B3,188,400567,139
Events in quadrant C6,743,482484,120
Events in quadrant D4,724,591531,942

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127410
B0135030
C0243340
D0182230

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6145470.764849%
B6146911.480638%
C6145114718.665582%
D61454907.973963%

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 7060 6146 3 3 0.04% 0.05%
B 7061 6147 32 32 0.45% 0.52%
C 7060 6146 645 645 9.14% 10.49%
D 7060 6146 370 370 5.24% 6.02%

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 6 16 51410 338.9 742 726 149.6
A 0 13 37728 247.42 742 726 149.6
A 13 254 10888 67.95 742 726 149.6
B 5 172 203192 1428.02 738 719 141.8
B 0 230 47474 329.76 738 719 141.8
B 0 186 37404 258.74 738 719 141.8
C 3 233 2966799 18640.41 673 678 159.1
C 0 239 1021628 6416.1 673 678 159.1
C 14 238 103840 648.32 673 678 159.1
D 1 52 1937133 11443.06 703 684 169.2
D 11 176 56211 328.12 703 684 169.2
D 2 234 26248 151.06 703 684 169.2

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