ASTROSAT CZTI

Data Quality Report

Orbit 25089

Creation date: 2024-06-27T19:13:42.358880
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/AS1T03_206T01_9000003672_25089cztM0_level2.evt modeM0/AS1T03_206T01_9000003672_25089cztM0_level2_quad_clean.evt
Size (bytes)794,456,64076,072,320
Size757.7 MB 72.5 MB
Events in quadrant A4,000,048465,305
Events in quadrant B4,222,867468,161
Events in quadrant C10,266,014409,405
Events in quadrant D5,063,627437,450

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0770
B0770
C0770
D0770

Mode 2c
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014013935853863246
B0-1-1
C0-1-1
D0-1-1

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164970
B0172090
C0357050
D0200150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75133664.871556%
B75133815.071210%
C7513233331.052842%
D75132323.087981%

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 7713 7514 88 88 1.14% 1.17%
B 7713 7513 70 70 0.91% 0.93%
C 7713 7513 1374 1374 17.81% 18.29%
D 7713 7513 47 47 0.61% 0.63%

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 332347 1744.06 934 913 190.0
A 10 17 65717 341.01 934 913 190.0
A 13 254 12586 61.43 934 913 190.0
B 3 64 512086 2806.66 934 909 182.1
B 0 190 22554 118.84 934 909 182.1
B 12 111 22324 117.58 934 909 182.1
C 7 247 6893905 35630.78 822 824 193.5
C 14 238 126964 652.03 822 824 193.5
C 0 207 18455 91.14 822 824 193.5
D 8 195 673386 3039.83 909 879 221.2
D 1 52 560542 2529.76 909 879 221.2
D 2 244 133936 601.44 909 879 221.2

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