ASTROSAT CZTI

Data Quality Report

Orbit 10986

Creation date: 2024-06-27T16:06:35.026063
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/AS1G08_027T06_9000001594_10986cztM0_level2.evt modeM0/AS1G08_027T06_9000001594_10986cztM0_level2_quad_clean.evt
Size (bytes)478,840,32099,967,680
Size456.7 MB 95.3 MB
Events in quadrant A3,229,801673,514
Events in quadrant B4,122,067659,189
Events in quadrant C2,985,147653,132
Events in quadrant D3,756,889621,993

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132132
B0162081
C0125851
D0149951

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60081111.847537%
B60083355.575899%
C6008781.298269%
D60081702.829561%

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 7283 6009 11 11 0.15% 0.18%
B 7283 6008 156 156 2.14% 2.60%
C 7283 6009 0 0 0.00% 0.00%
D 7283 6009 69 69 0.95% 1.15%

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 8 5 61255 371.16 803 790 162.9
A 15 223 33088 198.26 803 790 162.9
A 15 239 14770 85.81 803 790 162.9
B 4 239 932000 6351.88 776 761 146.6
B 0 214 75178 507.59 776 761 146.6
B 0 187 20906 137.41 776 761 146.6
C 1 3 7746 40.03 763 767 174.3
C 13 61 5628 27.88 763 767 174.3
C 9 54 3513 15.75 763 767 174.3
D 1 52 424217 2335.03 767 748 181.4
D 13 152 103352 565.76 767 748 181.4
D 8 195 98058 536.57 767 748 181.4

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