ASTROSAT CZTI

Data Quality Report

Orbit 26108

Creation date: 2024-06-27T19:24:47.898834
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_018T01_9000003774_26108cztM0_level2.evt modeM0/AS1A09_018T01_9000003774_26108cztM0_level2_quad_clean.evt
Size (bytes)530,861,76084,568,320
Size506.3 MB 80.7 MB
Events in quadrant A3,147,066553,611
Events in quadrant B3,341,360562,640
Events in quadrant C4,055,088520,128
Events in quadrant D5,094,176472,249

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133210
B0138730
C0160860
D0193660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6478190.293300%
B6478701.080580%
C64782363.643100%
D64785748.860759%

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 7585 6480 0 0 0.00% 0.00%
B 7585 6479 26 26 0.34% 0.40%
C 7585 6480 125 125 1.65% 1.93%
D 7585 6480 555 555 7.32% 8.56%

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 13 254 9993 56.42 814 799 162.9
A 0 13 9244 51.83 814 799 162.9
A 3 137 7510 41.18 814 799 162.9
B 5 172 105396 679.12 808 789 154.0
B 0 190 32697 207.15 808 789 154.0
B 12 111 18870 117.38 808 789 154.0
C 2 16 851797 4728.5 766 770 180.0
C 14 238 123400 681.36 766 770 180.0
C 3 233 65784 361.23 766 770 180.0
D 1 52 2104473 11791.23 741 726 178.4
D 14 35 59181 327.63 741 726 178.4
D 7 80 53532 295.97 741 726 178.4

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