ASTROSAT CZTI

Data Quality Report

Orbit 50919

Creation date: 2025-02-26T03:14:36.736762
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/AS1C07_001T01_9000006450_50919cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50919cztM0_level2_quad_clean.evt
Size (bytes)1,087,015,68090,483,840
Size1.0 GB 86.3 MB
Events in quadrant A15,868,968294,878
Events in quadrant B3,863,034801,574
Events in quadrant C10,136,052531,314
Events in quadrant D9,758,390561,151

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0526240
B0171861
C0356230
D0344290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7917521265.833018%
B7916460.581102%
C7917225728.508273%
D7917160520.272831%

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 7917 7917 4553 4553 57.51% 57.51%
B 7916 7916 22 22 0.28% 0.28%
C 7917 7917 1926 1926 24.33% 24.33%
D 7917 7917 1282 1282 16.19% 16.19%

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 14 254 11434305 88956.65 501 486 128.5
A 4 4 1413453 10993.07 501 486 128.5
A 4 3 165302 1282.29 501 486 128.5
B 0 213 138258 780.41 834 804 176.1
B 7 252 99145 558.34 834 804 176.1
B 8 128 74278 417.16 834 804 176.1
C 4 210 2734126 13971.02 708 702 195.6
C 5 10 1785675 9123.32 708 702 195.6
C 12 247 855267 4367.83 708 702 195.6
D 7 45 2755321 12988.87 757 729 212.1
D 3 12 705655 3323.97 757 729 212.1
D 2 249 604206 2845.6 757 729 212.1

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