ASTROSAT CZTI

Data Quality Report

Orbit 17745

Creation date: 2024-06-27T17:40:22.225784
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_070T04_9000002638_17745cztM0_level2.evt modeM0/AS1T03_070T04_9000002638_17745cztM0_level2_quad_clean.evt
Size (bytes)447,716,16090,141,120
Size427.0 MB 86.0 MB
Events in quadrant A3,113,316587,182
Events in quadrant B3,584,052596,966
Events in quadrant C3,181,016571,503
Events in quadrant D3,270,645552,517

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130171
B0144521
C0129661
D0137741

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6038360.596224%
B60381602.649884%
C6038570.944021%
D6038671.109639%

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 7408 6039 11 11 0.15% 0.18%
B 7408 6039 110 110 1.48% 1.82%
C 7408 6039 2 2 0.03% 0.03%
D 7408 6039 47 47 0.63% 0.78%

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 146172 945.05 767 752 153.9
A 15 191 17074 106.07 767 752 153.9
A 0 226 6668 38.44 767 752 153.9
B 10 245 448366 3127.06 771 754 143.1
B 0 219 47784 328.56 771 754 143.1
B 0 230 27044 183.66 771 754 143.1
C 14 238 116869 666.66 750 757 174.2
C 5 218 56885 322.26 750 757 174.2
C 3 233 49691 280.95 750 757 174.2
D 7 238 125108 641.54 738 726 193.9
D 1 20 89420 457.47 738 726 193.9
D 10 70 81521 416.73 738 726 193.9

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