ASTROSAT CZTI

Data Quality Report

Orbit 43647

Creation date: 2024-06-27T22:54:02.904762
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/AS1A12_068T05_9000005894_43647cztM0_level2.fits modeM0/AS1A12_068T05_9000005894_43647cztM0_level2_quad_clean.evt
Size (bytes)801,771,84094,193,280
Size764.6 MB 89.8 MB
Events in quadrant A4,055,923734,015
Events in quadrant B4,354,558727,696
Events in quadrant C14,698,642346,605
Events in quadrant D6,106,264622,556

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165011
B0167521
C0478126
D0223861

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59881061.770207%
B59883846.412826%
C5988520086.840347%
D598861110.203741%

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 7217 5988 30 30 0.42% 0.50%
B 7218 5988 330 330 4.57% 5.51%
C 7218 5989 5196 5196 71.99% 86.76%
D 7218 5988 480 480 6.65% 8.02%

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 10 83 787276 5475.43 705 691 143.7
A 13 248 134360 930.47 705 691 143.7
A 15 223 111592 771.98 705 691 143.7
B 5 235 1163554 8915.78 682 664 130.4
B 10 245 183684 1403.2 682 664 130.4
B 4 206 111960 853.3 682 664 130.4
C 15 142 7363123 92612.52 339 341 79.5
C 15 126 2507126 31531.51 339 341 79.5
C 15 158 1545820 19439.76 339 341 79.5
D 13 187 720701 3944.43 666 648 182.5
D 12 6 626648 3429.21 666 648 182.5
D 14 210 309327 1690.93 666 648 182.5

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