ASTROSAT CZTI

Data Quality Report

Orbit 18008

Creation date: 2024-06-27T17:43:47.422602
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/AS1A05_159T01_9000002678_18008cztM0_level2.evt modeM0/AS1A05_159T01_9000002678_18008cztM0_level2_quad_clean.evt
Size (bytes)493,476,480104,783,040
Size470.6 MB 99.9 MB
Events in quadrant A3,475,828695,941
Events in quadrant B3,582,003696,538
Events in quadrant C3,523,317661,068
Events in quadrant D3,909,328653,260

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144702
B0147402
C0145432
D0158953

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66931041.553862%
B66931331.987151%
C66931452.166443%
D66921201.793186%

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 7738 6694 7 7 0.09% 0.10%
B 7738 6694 15 15 0.19% 0.22%
C 7738 6694 2 2 0.03% 0.03%
D 7737 6693 38 38 0.49% 0.57%

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 4 2 87579 487.41 876 860 177.9
A 15 174 19748 106.16 876 860 177.9
A 0 226 7623 38.01 876 860 177.9
B 5 172 58292 344.79 869 851 166.6
B 7 220 43149 253.9 869 851 166.6
B 0 197 18740 107.38 869 851 166.6
C 14 238 130230 665.44 830 840 194.4
C 0 207 113076 577.22 830 840 194.4
C 3 233 23814 118.15 830 840 194.4
D 5 222 410145 1838.66 846 830 222.6
D 11 176 120479 537.47 846 830 222.6
D 7 38 92400 411.34 846 830 222.6

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