ASTROSAT CZTI

Data Quality Report

Orbit 36869

Creation date: 2024-06-27T21:32:35.226104
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/AS1A11_075T01_9000005244_36869cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36869cztM0_level2_quad_clean.evt
Size (bytes)337,268,16073,563,840
Size321.6 MB 70.2 MB
Events in quadrant A2,558,683628,101
Events in quadrant B744,7309,555
Events in quadrant C2,833,983647,584
Events in quadrant D3,740,648598,693

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107293
B049602
C0113282
D0143332

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4863300.616903%
B48634863100.000000%
C48631102.261978%
D48632525.181986%

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 6986 4864 21 21 0.30% 0.43%
B 6985 4862 0 0 0.00% 0.00%
C 6986 4864 87 87 1.25% 1.79%
D 6986 4864 254 254 3.64% 5.22%

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 216675 1900.05 566 557 113.7
A 13 248 65176 568.11 566 557 113.7
A 9 143 56215 489.33 566 557 113.7
B 12 243 674454 185952.26 10 10 3.6
B 12 144 12157 3349.07 10 10 3.6
B 5 172 5760 1585.34 10 10 3.6
C 0 10 227097 1757.25 564 570 128.9
C 15 214 205332 1588.41 564 570 128.9
C 14 254 84714 652.73 564 570 128.9
D 12 17 799942 5518.71 547 537 144.9
D 13 249 219217 1509.66 547 537 144.9
D 13 171 165553 1139.19 547 537 144.9

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