ASTROSAT CZTI

Data Quality Report

Orbit 49676

Creation date: 2024-12-10T13:32:05.017513
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/AS1T05_233T01_9000006438_49676cztM0_level2.fits modeM0/AS1T05_233T01_9000006438_49676cztM0_level2_quad_clean.evt
Size (bytes)1,160,752,32054,455,040
Size1.1 GB 51.9 MB
Events in quadrant A14,143,803411,346
Events in quadrant B4,595,285616,274
Events in quadrant C8,131,19820,420
Events in quadrant D15,623,566165,454

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0461670
B0179390
C0284510
D0506360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6115488879.934587%
B61154897.996729%
C61166116100.000000%
D6116607399.296926%

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 7065 6115 4907 4907 69.46% 80.25%
B 7065 6116 311 311 4.40% 5.09%
C 7065 6115 740 740 10.47% 12.10%
D 7066 6116 5530 5530 78.26% 90.42%

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 6897337 51299.95 481 467 134.4
A 12 50 1021305 7593.15 481 467 134.4
A 0 99 808950 6013.62 481 467 134.4
B 7 0 708107 5172.58 643 622 136.8
B 5 49 555099 4053.9 643 622 136.8
B 4 206 251296 1832.73 643 622 136.8
C 15 190 2720923 119205.49 40 37 22.8
C 15 180 2250074 98576.99 40 37 22.8
C 15 181 1072840 47000.87 40 37 22.8
D 15 40 4462762 55627.32 217 205 80.2
D 7 30 1723185 21477.54 217 205 80.2
D 15 106 896039 11166.88 217 205 80.2

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