ASTROSAT CZTI

Data Quality Report

Orbit 31598

Creation date: 2024-06-27T20:30:30.773359
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/AS1C06_002T03_9000004610_31598cztM0_level2.evt modeM0/AS1C06_002T03_9000004610_31598cztM0_level2_quad_clean.evt
Size (bytes)838,664,640107,320,320
Size799.8 MB 102.3 MB
Events in quadrant A8,535,510526,442
Events in quadrant B4,967,383832,520
Events in quadrant C4,622,625752,266
Events in quadrant D6,890,947739,489

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0291352
B0190911
C0174311
D0244021

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5679295351.998591%
B56802063.626761%
C568090015.845070%
D568096917.059859%

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 6988 5678 2201 2201 31.50% 38.76%
B 6990 5680 103 103 1.47% 1.81%
C 6989 5679 782 782 11.19% 13.77%
D 6989 5679 1064 1064 15.22% 18.74%

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 6710246 71904.49 472 464 93.3
A 13 254 7699 77.53 472 464 93.3
A 3 137 4154 39.54 472 464 93.3
B 6 159 1702264 13182.41 704 687 129.1
B 0 229 129747 999.85 704 687 129.1
B 5 172 102297 787.19 704 687 129.1
C 3 233 1901717 12750.95 642 650 149.1
C 14 238 104158 694.25 642 650 149.1
C 0 10 32710 215.03 642 650 149.1
D 8 195 2170682 13854.47 662 644 156.6
D 11 176 930664 5937.65 662 644 156.6
D 12 218 547960 3494.3 662 644 156.6

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