ASTROSAT CZTI

Data Quality Report

Orbit 33685

Creation date: 2024-06-27T20:51:30.818665
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/AS1T04_090T01_9000004812_33685cztM0_level2.evt modeM0/AS1T04_090T01_9000004812_33685cztM0_level2_quad_clean.evt
Size (bytes)461,911,68070,335,360
Size440.5 MB 67.1 MB
Events in quadrant A2,641,733458,107
Events in quadrant B3,108,992456,054
Events in quadrant C3,088,330465,937
Events in quadrant D4,820,709408,865

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107852
B0122741
C0122951
D0177351

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4857651.338275%
B48571763.623636%
C4857741.523574%
D485764913.362158%

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 6979 4858 54 54 0.77% 1.11%
B 6979 4858 163 163 2.34% 3.36%
C 6979 4858 53 53 0.76% 1.09%
D 6979 4858 651 651 9.33% 13.40%

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 260252 2134.57 610 599 121.6
A 13 6 13583 106.74 610 599 121.6
A 7 16 8265 63.02 610 599 121.6
B 5 172 600041 5308.03 605 590 112.9
B 0 219 27543 238.66 605 590 112.9
B 15 85 23785 205.39 605 590 112.9
C 3 233 373279 2720.35 601 609 137.0
C 15 214 208103 1514.63 601 609 137.0
C 0 10 136973 995.4 601 609 137.0
D 8 230 1369215 10045.37 560 545 136.2
D 15 0 498059 3651.51 560 545 136.2
D 8 195 479257 3513.51 560 545 136.2

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