ASTROSAT CZTI

Data Quality Report

Orbit 14425

Creation date: 2024-06-27T16:55:00.126293
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_025T01_9000002130_14425cztM0_level2.evt modeM0/AS1G08_025T01_9000002130_14425cztM0_level2_quad_clean.evt
Size (bytes)584,190,72079,335,360
Size557.1 MB 75.7 MB
Events in quadrant A2,993,442519,564
Events in quadrant B4,902,130484,178
Events in quadrant C4,905,802486,753
Events in quadrant D4,480,099487,826

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128002
B0187091
C0187861
D0175421

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6068510.840475%
B60685418.915623%
C60682263.724456%
D60683776.212920%

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 6979 6069 1 1 0.01% 0.02%
B 6979 6069 344 344 4.93% 5.67%
C 6979 6069 133 133 1.91% 2.19%
D 6979 6069 291 291 4.17% 4.79%

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 15 78233 507.76 737 720 152.7
A 12 189 68780 445.83 737 720 152.7
A 0 226 6666 38.95 737 720 152.7
B 0 85 1494794 11075.75 706 686 134.9
B 0 182 464191 3435.94 706 686 134.9
B 0 190 42435 309.48 706 686 134.9
C 3 233 2162346 13271.58 701 703 162.9
C 0 207 6588 36.13 701 703 162.9
C 13 61 5154 27.33 701 703 162.9
D 13 122 1176567 6642.65 702 685 177.0
D 10 199 321003 1809.5 702 685 177.0
D 2 120 128780 723.62 702 685 177.0

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