ASTROSAT CZTI

Data Quality Report

Orbit 26902

Creation date: 2024-06-27T19:34:13.554740
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/AS1A09_038T17_9000003884_26902cztM0_level2.evt modeM0/AS1A09_038T17_9000003884_26902cztM0_level2_quad_clean.evt
Size (bytes)712,232,640116,173,440
Size679.2 MB 110.8 MB
Events in quadrant A4,137,314793,045
Events in quadrant B6,539,710720,336
Events in quadrant C3,559,060801,297
Events in quadrant D6,844,059698,898

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168930
B0241200
C0151710
D0251610

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72253264.512111%
B7226144720.024910%
C72263214.442292%
D7226144920.052588%

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 7260 7226 16 16 0.22% 0.22%
B 7261 7226 774 774 10.66% 10.71%
C 7261 7227 0 0 0.00% 0.00%
D 7261 7227 988 988 13.61% 13.67%

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 6 16 343456 1921.41 881 857 178.3
A 0 13 328766 1839.03 881 857 178.3
A 5 168 65888 364.72 881 857 178.3
B 3 64 2789857 18162.71 799 778 153.6
B 10 245 319402 2074.9 799 778 153.6
B 0 190 261132 1695.45 799 778 153.6
C 14 238 137351 682.14 862 865 200.1
C 3 233 27546 133.35 862 865 200.1
C 2 16 20288 97.07 862 865 200.1
D 1 52 3323925 17637.57 794 774 188.4
D 7 80 329558 1745.02 794 774 188.4
D 2 250 93436 491.8 794 774 188.4

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