ASTROSAT CZTI

Data Quality Report

Orbit 15953

Creation date: 2024-06-27T17:15:38.173407
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/AS1G08_081T01_9000002350_15953cztM0_level2.evt modeM0/AS1G08_081T01_9000002350_15953cztM0_level2_quad_clean.evt
Size (bytes)427,495,68091,048,320
Size407.7 MB 86.8 MB
Events in quadrant A3,190,562580,627
Events in quadrant B3,273,341595,890
Events in quadrant C3,096,863569,246
Events in quadrant D2,943,073557,289

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138983
B0140112
C0134212
D0134242

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6514550.844335%
B6514240.368437%
C6514370.568007%
D6514140.214922%

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 7500 6516 22 22 0.29% 0.34%
B 7500 6516 3 3 0.04% 0.05%
C 7500 6516 0 0 0.00% 0.00%
D 7500 6516 10 10 0.13% 0.15%

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 15 239 171056 1090.32 779 760 156.2
A 13 210 21703 134.08 779 760 156.2
A 0 226 6845 38.96 779 760 156.2
B 15 222 68771 457.47 784 765 148.7
B 4 216 41757 275.75 784 765 148.7
B 4 173 41376 273.19 784 765 148.7
C 14 238 115510 646.33 757 763 177.5
C 3 233 22404 121.9 757 763 177.5
C 13 61 5346 25.81 757 763 177.5
D 10 70 33239 177.18 758 736 183.4
D 2 234 28701 152.45 758 736 183.4
D 2 152 12735 65.41 758 736 183.4

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