ASTROSAT CZTI

Data Quality Report

Orbit 11863

Creation date: 2024-06-27T16:19:24.081843
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/AS1G08_048T01_9000001752_11863cztM0_level2.evt modeM0/AS1G08_048T01_9000001752_11863cztM0_level2_quad_clean.evt
Size (bytes)514,889,28099,403,200
Size491.0 MB 94.8 MB
Events in quadrant A3,528,426643,112
Events in quadrant B4,331,720635,485
Events in quadrant C3,121,516633,146
Events in quadrant D4,133,495607,694

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151223
B0174552
C0143002
D0167182

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7046741.050241%
B70462663.775192%
C7046240.340619%
D7046721.021856%

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 7897 7048 0 0 0.00% 0.00%
B 7896 7047 157 157 1.99% 2.23%
C 7896 7047 0 0 0.00% 0.00%
D 7896 7047 37 37 0.47% 0.53%

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 1 162 121098 704.49 833 815 170.7
A 1 178 59320 342.66 833 815 170.7
A 1 161 52420 302.25 833 815 170.7
B 4 239 873454 5487.73 825 807 159.0
B 15 204 82021 510.72 825 807 159.0
B 4 173 42511 262.26 825 807 159.0
C 13 61 6009 27.94 800 803 186.3
C 12 4 1947 6.14 800 803 186.3
C 3 202 1938 6.09 800 803 186.3
D 1 52 446158 2331.81 792 770 191.0
D 8 195 389594 2035.67 792 770 191.0
D 13 104 75540 391.46 792 770 191.0

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