ASTROSAT CZTI

Data Quality Report

Orbit 15196

Creation date: 2024-06-27T17:05:07.717371
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/AS1C03_015T04_9000002240_15196cztM0_level2.evt modeM0/AS1C03_015T04_9000002240_15196cztM0_level2_quad_clean.evt
Size (bytes)389,122,56089,424,000
Size371.1 MB 85.3 MB
Events in quadrant A2,180,628604,553
Events in quadrant B4,110,645570,837
Events in quadrant C2,681,219617,055
Events in quadrant D2,496,586589,862

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A096180
B0153370
C0111400
D0106390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4637380.819495%
B463769815.052836%
C4637340.733233%
D46371062.285961%

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 4638 4638 1 1 0.02% 0.02%
B 4638 4638 464 464 10.00% 10.00%
C 4638 4638 0 0 0.00% 0.00%
D 4637 4637 70 70 1.51% 1.51%

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 86342 785.26 539 529 109.3
A 13 248 9412 81.29 539 529 109.3
A 3 1 6035 50.38 539 529 109.3
B 3 112 1886627 19776.46 510 498 95.4
B 3 64 83698 872.37 510 498 95.4
B 0 189 43485 450.73 510 498 95.4
C 3 233 590129 4795.42 533 535 122.9
C 0 207 5985 44.33 533 535 122.9
C 13 61 3958 27.84 533 535 122.9
D 2 33 157337 1232.68 526 510 127.2
D 7 38 153053 1199.01 526 510 127.2
D 4 95 119851 938.04 526 510 127.2

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