ASTROSAT CZTI

Data Quality Report

Orbit 43855

Creation date: 2024-06-27T22:56:35.518028
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_087T01_9000005908_43855cztM0_level2.fits modeM0/AS1A13_087T01_9000005908_43855cztM0_level2_quad_clean.evt
Size (bytes)823,962,240120,784,320
Size785.8 MB 115.2 MB
Events in quadrant A9,313,799689,816
Events in quadrant B4,276,046898,866
Events in quadrant C9,978,545768,212
Events in quadrant D6,299,451732,223

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0332881
B0182741
C0354551
D0244565

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8175210225.712538%
B81753123.816514%
C8176137316.793053%
D817589910.996942%

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 8385 8175 1244 1244 14.84% 15.22%
B 8385 8175 36 36 0.43% 0.44%
C 8385 8175 870 870 10.38% 10.64%
D 8384 8174 764 764 9.11% 9.35%

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 5087875 28975.98 855 836 175.6
A 10 83 863087 4911.42 855 836 175.6
A 2 79 20751 113.44 855 836 175.6
B 5 235 245375 1298.8 949 918 188.2
B 0 183 63656 333.33 949 918 188.2
B 4 170 55987 292.58 949 918 188.2
C 3 233 5534822 26398.0 885 888 209.6
C 15 158 357881 1702.93 885 888 209.6
C 0 239 248581 1181.55 885 888 209.6
D 2 249 1556502 6811.89 907 877 228.4
D 1 52 433133 1892.8 907 877 228.4
D 5 235 325441 1421.23 907 877 228.4

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