ASTROSAT CZTI

Data Quality Report

Orbit 33783

Creation date: 2024-06-27T20:52:36.595012
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/AS1A11_086T01_9000004820_33783cztM0_level2.evt modeM0/AS1A11_086T01_9000004820_33783cztM0_level2_quad_clean.evt
Size (bytes)763,070,40051,883,200
Size727.7 MB 49.5 MB
Events in quadrant A4,600,507305,099
Events in quadrant B3,987,369312,794
Events in quadrant C3,296,292317,842
Events in quadrant D10,861,647256,422

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172833
B0152702
C0130952
D0360032

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53964939.136397%
B53963636.727205%
C5396691.278725%
D5396300955.763529%

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 7279 5397 358 358 4.92% 6.63%
B 7279 5397 257 257 3.53% 4.76%
C 7279 5397 47 47 0.65% 0.87%
D 7279 5397 3195 3195 43.89% 59.20%

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 15 237 1234923 9156.1 676 665 134.8
A 15 169 728805 5401.56 676 665 134.8
A 13 6 13841 97.74 676 665 134.8
B 5 172 1049726 8299.08 672 656 126.4
B 4 251 114799 902.97 672 656 126.4
B 0 213 32018 248.1 672 656 126.4
C 15 214 236471 1527.25 674 679 154.4
C 3 233 180931 1167.51 674 679 154.4
C 0 10 112806 726.26 674 679 154.4
D 12 235 6736411 47409.83 578 563 142.1
D 8 195 922935 6492.06 578 563 142.1
D 2 250 357100 2509.46 578 563 142.1

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