ASTROSAT CZTI

Data Quality Report

Orbit 41086

Creation date: 2024-06-27T22:24:16.477918
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_095T02_9000005596_41086cztM0_level2.fits modeM0/AS1A12_095T02_9000005596_41086cztM0_level2_quad_clean.evt
Size (bytes)341,395,20085,282,560
Size325.6 MB 81.3 MB
Events in quadrant A3,400,775576,292
Events in quadrant B2,774,955585,868
Events in quadrant C3,266,190543,441
Events in quadrant D2,795,370516,350

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134823
B0117032
C0130112
D0118662

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5137210.408799%
B5137370.720265%
C51372214.302122%
D5137811.576796%

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 7080 5138 3 3 0.04% 0.06%
B 7080 5138 24 24 0.34% 0.47%
C 7080 5138 197 197 2.78% 3.83%
D 7080 5138 79 79 1.12% 1.54%

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 12 189 657362 5692.22 559 547 115.4
A 10 83 530909 4596.32 559 547 115.4
A 13 248 30700 261.32 559 547 115.4
B 5 32 204561 1867.54 559 544 109.2
B 0 190 172768 1576.51 559 544 109.2
B 0 186 78834 716.65 559 544 109.2
C 14 254 753227 5948.5 541 545 126.5
C 15 214 214284 1689.19 541 545 126.5
C 0 10 179819 1416.81 541 545 126.5
D 2 249 176325 1313.73 547 533 133.8
D 13 249 137522 1023.75 547 533 133.8
D 2 16 119655 890.22 547 533 133.8

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