ASTROSAT CZTI

Data Quality Report

Orbit 27315

Creation date: 2024-06-27T19:38:47.770836
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_255T01_9000003922_27315cztM0_level2.evt modeM0/AS1T03_255T01_9000003922_27315cztM0_level2_quad_clean.evt
Size (bytes)452,439,360100,425,600
Size431.5 MB 95.8 MB
Events in quadrant A3,217,219682,065
Events in quadrant B3,321,330678,284
Events in quadrant C3,238,324633,976
Events in quadrant D3,519,354629,641

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131860
B0133920
C0132170
D0142730

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59741302.176096%
B59751542.577406%
C59751803.012552%
D59741071.791095%

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 7259 5975 18 18 0.25% 0.30%
B 7260 5976 38 38 0.52% 0.64%
C 7260 5976 11 11 0.15% 0.18%
D 7259 5975 45 45 0.62% 0.75%

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 13 248 74095 449.09 815 803 163.2
A 13 254 9799 55.12 815 803 163.2
A 0 226 7066 38.38 815 803 163.2
B 5 172 113903 756.54 799 782 149.5
B 0 190 26430 171.53 799 782 149.5
B 3 64 21193 136.51 799 782 149.5
C 14 238 123869 697.82 756 763 176.4
C 15 208 111592 628.23 756 763 176.4
C 2 16 50155 279.97 756 763 176.4
D 2 250 280149 1416.98 774 757 197.2
D 1 52 158166 798.32 774 757 197.2
D 12 233 49003 244.69 774 757 197.2

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