ASTROSAT CZTI

Data Quality Report

Orbit 11580

Creation date: 2024-06-27T16:15:25.402939
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/AS1A04_137T01_9000001700_11580cztM0_level2.evt modeM0/AS1A04_137T01_9000001700_11580cztM0_level2_quad_clean.evt
Size (bytes)571,582,08092,655,360
Size545.1 MB 88.4 MB
Events in quadrant A5,161,356588,615
Events in quadrant B4,845,799594,003
Events in quadrant C3,002,839613,235
Events in quadrant D3,885,155581,733

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0195342
B0183261
C0127511
D0153681

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61345258.558852%
B61345328.672970%
C6134871.418324%
D61342303.749592%

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 7340 6136 283 283 3.86% 4.61%
B 7340 6136 311 311 4.24% 5.07%
C 7340 6136 5 5 0.07% 0.08%
D 7340 6136 134 134 1.83% 2.18%

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 8 5 1973223 12498.79 779 765 157.8
A 1 162 53663 335.2 779 765 157.8
A 13 251 34829 215.85 779 765 157.8
B 4 239 1074582 7266.79 774 757 147.8
B 3 64 396985 2681.35 774 757 147.8
B 11 51 125439 843.75 774 757 147.8
C 14 234 24651 135.68 763 770 176.0
C 13 61 5559 27.21 763 770 176.0
C 12 4 3445 15.2 763 770 176.0
D 10 253 275380 1514.86 763 744 181.3
D 1 52 224067 1231.82 763 744 181.3
D 2 120 134374 737.09 763 744 181.3

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