ASTROSAT CZTI

Data Quality Report

Orbit 11237

Creation date: 2024-06-27T16:10:09.721735
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/AS1T01_200T01_9000001638_11237cztM0_level2.evt modeM0/AS1T01_200T01_9000001638_11237cztM0_level2_quad_clean.evt
Size (bytes)551,422,080120,496,320
Size525.9 MB 114.9 MB
Events in quadrant A4,315,715787,749
Events in quadrant B3,872,020809,616
Events in quadrant C2,992,468815,132
Events in quadrant D5,053,568757,779

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174242
B0161121
C0140531
D0197411

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68853344.851126%
B68852613.790850%
C6885540.784314%
D68853154.575163%

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 7090 6888 125 125 1.76% 1.81%
B 7090 6888 63 63 0.89% 0.91%
C 7090 6888 0 0 0.00% 0.00%
D 7090 6888 186 186 2.62% 2.70%

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 1046342 6582.16 772 754 158.9
A 15 174 149165 934.27 772 754 158.9
A 14 238 102241 638.88 772 754 158.9
B 4 239 383192 2566.56 779 759 149.0
B 4 81 252144 1687.08 779 759 149.0
B 11 51 64836 430.03 779 759 149.0
C 5 239 16046 86.3 762 764 177.1
C 13 61 5636 27.51 762 764 177.1
C 12 4 3654 16.32 762 764 177.1
D 8 195 967929 5330.31 746 723 181.5
D 14 34 459821 2530.1 746 723 181.5
D 1 52 289357 1590.67 746 723 181.5

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