ASTROSAT CZTI

Data Quality Report

Orbit 16579

Creation date: 2024-06-27T17:24:39.093551
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_020T01_9000002444_16579cztM0_level2.evt modeM0/AS1T03_020T01_9000002444_16579cztM0_level2_quad_clean.evt
Size (bytes)548,470,08084,983,040
Size523.1 MB 81.0 MB
Events in quadrant A3,347,698603,802
Events in quadrant B3,272,313622,857
Events in quadrant C5,160,572582,392
Events in quadrant D4,373,338296,437

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146232
B0140841
C0199391
D0179061

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66961612.404421%
B66961191.777180%
C66963014.495221%
D6696336550.253883%

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 7077 6698 36 36 0.51% 0.54%
B 7077 6698 3 3 0.04% 0.04%
C 7077 6698 36 36 0.51% 0.54%
D 7076 6692 126 126 1.78% 1.88%

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 15 174 250607 1578.83 774 755 158.3
A 9 143 81817 512.24 774 755 158.3
A 2 79 27311 167.81 774 755 158.3
B 15 35 103684 689.4 777 756 149.3
B 0 229 24818 161.16 777 756 149.3
B 0 214 21562 139.36 777 756 149.3
C 3 233 2143404 12258.61 744 747 174.8
C 14 238 112938 641.87 744 747 174.8
C 7 247 6275 31.63 744 747 174.8
D 1 52 2472810 21825.41 458 443 113.3
D 10 70 136181 1198.26 458 443 113.3
D 2 14 18831 162.32 458 443 113.3

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