ASTROSAT CZTI

Data Quality Report

Orbit 50865

Creation date: 2025-02-22T13:18:15.058375
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_50865cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50865cztM0_level2_quad_clean.evt
Size (bytes)1,754,743,680239,716,800
Size1.6 GB 228.6 MB
Events in quadrant A17,617,7321,568,264
Events in quadrant B12,286,3561,713,766
Events in quadrant C18,626,4921,273,392
Events in quadrant D14,982,9241,414,993

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03780
B03780
C03780
D03780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0652452
B0497402
C0682252
D0576932

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1867916608.886985%
B1867912986.948980%
C18679394321.109267%
D1868015788.447537%

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 20199 18680 1531 1531 7.58% 8.20%
B 20199 18680 947 947 4.69% 5.07%
C 20199 18680 3054 3054 15.12% 16.35%
D 20200 18681 1492 1492 7.39% 7.99%

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 4 4 5011368 10524.0 1916 1865 476.0
A 12 80 2842337 5967.29 1916 1865 476.0
A 8 249 274467 572.68 1916 1865 476.0
B 5 172 3323336 8185.73 1915 1847 405.8
B 8 128 558287 1371.33 1915 1847 405.8
B 10 247 119414 289.74 1915 1847 405.8
C 4 210 3454262 7485.03 1686 1672 461.3
C 15 229 2845420 6165.09 1686 1672 461.3
C 1 29 1010425 2186.92 1686 1672 461.3
D 15 185 2424172 4781.21 1813 1759 506.7
D 2 249 1101708 2171.01 1813 1759 506.7
D 1 47 717685 1413.05 1813 1759 506.7

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