ASTROSAT CZTI

Data Quality Report

Orbit 26875

Creation date: 2024-06-27T19:33:56.687483
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/AS1T03_224T01_9000003872_26875cztM0_level2.evt modeM0/AS1T03_224T01_9000003872_26875cztM0_level2_quad_clean.evt
Size (bytes)766,854,72082,422,720
Size731.3 MB 78.6 MB
Events in quadrant A3,750,341594,741
Events in quadrant B5,516,849595,707
Events in quadrant C3,158,411591,864
Events in quadrant D10,354,804254,770

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153970
B0208810
C0135280
D0353140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6563821.249429%
B65634727.191833%
C6562580.883877%
D6562377757.558671%

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 7628 6564 43 43 0.56% 0.66%
B 7628 6563 215 215 2.82% 3.28%
C 7627 6563 6 6 0.08% 0.09%
D 7627 6562 2513 2513 32.95% 38.30%

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 0 13 666010 4145.48 799 784 160.5
A 13 254 11262 65.3 799 784 160.5
A 3 137 7539 42.1 799 784 160.5
B 0 189 1855904 12403.42 790 772 149.6
B 3 112 169947 1131.1 790 772 149.6
B 3 64 161696 1075.94 790 772 149.6
C 14 238 121808 668.25 769 774 181.1
C 15 208 23570 125.86 769 774 181.1
C 2 16 14730 77.05 769 774 181.1
D 7 80 8410013 86150.37 412 402 97.6
D 1 52 130551 1333.28 412 402 97.6
D 11 176 130220 1329.89 412 402 97.6

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