ASTROSAT CZTI

Data Quality Report

Orbit 27155

Creation date: 2024-06-27T19:37:04.752249
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_245T01_9000003916_27155cztM0_level2.evt modeM0/AS1T03_245T01_9000003916_27155cztM0_level2_quad_clean.evt
Size (bytes)539,890,56093,625,920
Size514.9 MB 89.3 MB
Events in quadrant A3,644,782627,987
Events in quadrant B4,039,742627,191
Events in quadrant C3,117,223604,449
Events in quadrant D5,138,602552,591

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147850
B0157220
C0128950
D0193620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6062631.039261%
B60612534.174229%
C6061801.319914%
D60614046.665567%

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 7422 6063 11 11 0.15% 0.18%
B 7421 6062 113 113 1.52% 1.86%
C 7421 6062 1 1 0.01% 0.02%
D 7421 6062 414 414 5.58% 6.83%

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 325780 1993.97 811 798 163.0
A 6 16 113724 692.87 811 798 163.0
A 14 235 70385 426.96 811 798 163.0
B 15 33 392520 2643.04 798 782 148.2
B 5 172 256653 1726.35 798 782 148.2
B 3 112 188934 1269.45 798 782 148.2
C 14 238 124431 695.03 766 775 177.9
C 15 208 5915 28.89 766 775 177.9
C 13 61 5395 25.97 766 775 177.9
D 1 52 1068664 5500.06 741 726 194.2
D 7 38 842519 4335.37 741 726 194.2
D 2 250 275770 1416.52 741 726 194.2

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