ASTROSAT CZTI

Data Quality Report

Orbit 44801

Creation date: 2024-06-27T23:06:43.700410
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/AS1A13_004T13_9000006022_44801cztM0_level2.fits modeM0/AS1A13_004T13_9000006022_44801cztM0_level2_quad_clean.evt
Size (bytes)1,684,857,600224,939,520
Size1.6 GB 214.5 MB
Events in quadrant A30,056,918868,134
Events in quadrant B9,336,8461,705,362
Events in quadrant C7,552,5531,687,302
Events in quadrant D14,152,4041,416,361

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010068218
B0391692
C0349782
D0534522

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03320
B03320
C03320
D03320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16417877153.426326%
B164197324.458250%
C164192291.394726%
D16419166010.110238%

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 16878 16417 7921 7921 46.93% 48.25%
B 16879 16419 200 200 1.18% 1.22%
C 16879 16420 61 61 0.36% 0.37%
D 16879 16421 1282 1282 7.60% 7.81%

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 15 223 21269230 74818.14 1357 1325 284.3
A 10 83 3412068 11998.62 1357 1325 284.3
A 7 3 46941 160.47 1357 1325 284.3
B 0 189 1341345 3770.44 1798 1737 355.3
B 5 255 275055 769.28 1798 1737 355.3
B 5 172 194625 542.9 1798 1737 355.3
C 14 254 450920 1066.33 1793 1797 421.2
C 1 3 51284 117.49 1793 1797 421.2
C 12 2 38265 86.58 1793 1797 421.2
D 13 187 3664978 8390.3 1726 1668 436.6
D 5 235 868865 1986.19 1726 1668 436.6
D 2 249 838838 1917.42 1726 1668 436.6

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