ASTROSAT CZTI

Data Quality Report

Orbit 23176

Creation date: 2024-06-27T18:50:54.807836
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/AS1A07_148T05_9000003424_23176cztM0_level2.evt modeM0/AS1A07_148T05_9000003424_23176cztM0_level2_quad_clean.evt
Size (bytes)510,632,640102,392,640
Size487.0 MB 97.6 MB
Events in quadrant A4,271,839658,685
Events in quadrant B3,284,079689,991
Events in quadrant C3,741,515655,846
Events in quadrant D3,725,768642,872

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170166
B0138712
C0154542
D0153862

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65042503.843788%
B6504661.014760%
C65042373.643911%
D6504981.506765%

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 7579 6505 159 159 2.10% 2.44%
B 7579 6505 1 1 0.01% 0.02%
C 7579 6505 59 59 0.78% 0.91%
D 7579 6505 45 45 0.59% 0.69%

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 6 16 1148570 7061.74 810 794 162.5
A 13 254 9687 54.71 810 794 162.5
A 3 137 6906 37.6 810 794 162.5
B 0 190 31823 195.64 825 807 158.5
B 12 111 18752 113.19 825 807 158.5
B 11 111 16692 100.2 825 807 158.5
C 0 10 529545 2889.14 785 792 183.0
C 14 238 125175 679.64 785 792 183.0
C 8 208 10296 51.93 785 792 183.0
D 7 238 306959 1592.67 796 774 192.2
D 1 52 170409 882.38 796 774 192.2
D 12 233 54156 277.67 796 774 192.2

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