ASTROSAT CZTI

Data Quality Report

Orbit 17387

Creation date: 2024-06-27T17:35:51.016271
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_074T02_9000002572_17387cztM0_level2.evt modeM0/AS1A05_074T02_9000002572_17387cztM0_level2_quad_clean.evt
Size (bytes)488,393,28099,673,920
Size465.8 MB 95.1 MB
Events in quadrant A3,273,582645,101
Events in quadrant B3,749,614649,409
Events in quadrant C3,307,550621,745
Events in quadrant D3,974,379604,286

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146421
B0159031
C0146451
D0168121

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7154370.517193%
B71541421.984904%
C7154680.950517%
D71541301.817165%

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 7614 7155 0 0 0.00% 0.00%
B 7614 7155 29 29 0.38% 0.41%
C 7614 7155 0 0 0.00% 0.00%
D 7614 7155 98 98 1.29% 1.37%

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 0 226 7427 38.17 850 830 172.8
A 12 194 6256 31.4 850 830 172.8
A 3 137 6161 30.85 850 830 172.8
B 7 220 122123 742.55 850 827 163.4
B 4 216 90014 545.99 850 827 163.4
B 0 197 87335 529.59 850 827 163.4
C 14 238 124914 655.89 807 812 189.2
C 3 233 26513 135.83 807 812 189.2
C 13 61 5914 26.96 807 812 189.2
D 13 189 296607 1490.57 812 790 198.5
D 11 176 202968 1018.74 812 790 198.5
D 1 52 135886 680.72 812 790 198.5

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