ASTROSAT CZTI

Data Quality Report

Orbit 27806

Creation date: 2024-06-27T19:44:39.356777
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/AS1A10_016T02_9000004018_27806cztM0_level2.evt modeM0/AS1A10_016T02_9000004018_27806cztM0_level2_quad_clean.evt
Size (bytes)480,502,080124,087,680
Size458.2 MB 118.3 MB
Events in quadrant A3,510,334863,414
Events in quadrant B3,646,083872,644
Events in quadrant C3,477,201779,922
Events in quadrant D3,475,818787,891

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144460
B0148760
C0143820
D0144650

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65181141.749003%
B65191422.178248%
C65191442.208928%
D6519881.349900%

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 7793 6518 0 0 0.00% 0.00%
B 7794 6519 5 5 0.06% 0.08%
C 7794 6519 5 5 0.06% 0.08%
D 7794 6519 4 4 0.05% 0.06%

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 13 254 9274 46.47 911 898 180.2
A 3 137 8194 40.48 911 898 180.2
A 0 226 7439 36.29 911 898 180.2
B 10 245 121422 706.48 899 880 170.6
B 12 111 20298 113.81 899 880 170.6
B 11 111 18151 101.22 899 880 170.6
C 14 238 137265 701.07 838 845 194.6
C 10 22 58321 295.37 838 845 194.6
C 3 233 14118 68.21 838 845 194.6
D 1 52 235098 1137.34 859 838 206.0
D 2 234 25935 121.85 859 838 206.0
D 14 226 8098 35.25 859 838 206.0

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