ASTROSAT CZTI

Data Quality Report

Orbit 26707

Creation date: 2024-06-27T19:30:08.096985
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/AS1C05_019T04_9000003838_26707cztM0_level2.evt modeM0/AS1C05_019T04_9000003838_26707cztM0_level2_quad_clean.evt
Size (bytes)538,614,720108,028,800
Size513.7 MB 103.0 MB
Events in quadrant A3,430,434747,679
Events in quadrant B3,308,313745,631
Events in quadrant C3,434,174703,255
Events in quadrant D5,734,384657,736

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136670
B0131600
C0137440
D0210070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5971761.272819%
B5972590.987944%
C5971941.574276%
D597173912.376486%

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 7266 5972 11 11 0.15% 0.18%
B 7267 5973 1 1 0.01% 0.02%
C 7266 5972 11 11 0.15% 0.18%
D 7266 5972 548 548 7.54% 9.18%

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 0 13 182188 1097.61 830 817 165.2
A 2 79 33691 198.94 830 817 165.2
A 13 254 10134 56.38 830 817 165.2
B 0 189 36397 231.27 810 793 154.0
B 3 112 31899 202.05 810 793 154.0
B 4 200 30063 190.12 810 793 154.0
C 3 233 205971 1130.03 778 785 181.6
C 14 238 126943 694.8 778 785 181.6
C 15 208 67286 366.24 778 785 181.6
D 7 80 2350871 11933.55 755 738 196.9
D 15 35 143408 724.45 755 738 196.9
D 1 52 141896 716.78 755 738 196.9

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