ASTROSAT CZTI

Data Quality Report

Orbit 10885

Creation date: 2024-06-27T16:05:11.649797
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/AS1A04_055T01_9000001574_10885cztM0_level2.evt modeM0/AS1A04_055T01_9000001574_10885cztM0_level2_quad_clean.evt
Size (bytes)499,109,76088,920,000
Size476.0 MB 84.8 MB
Events in quadrant A4,361,474564,351
Events in quadrant B3,680,540580,080
Events in quadrant C2,745,485580,932
Events in quadrant D3,922,543549,647

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169593
B0147912
C0124212
D0155062

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59763415.706158%
B59762894.836011%
C5976651.087684%
D59761722.878179%

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 7191 5977 177 177 2.46% 2.96%
B 7191 5978 131 131 1.82% 2.19%
C 7191 5978 16 16 0.22% 0.27%
D 7191 5978 86 86 1.20% 1.44%

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 1396997 9529.52 714 699 146.5
A 15 223 117103 794.44 714 699 146.5
A 15 239 45863 308.24 714 699 146.5
B 4 239 737530 5486.09 713 696 134.3
B 0 219 71446 526.77 713 696 134.3
B 0 214 25154 182.1 713 696 134.3
C 0 207 56528 352.66 688 691 158.3
C 13 61 5238 28.72 688 691 158.3
C 14 234 3618 18.49 688 691 158.3
D 8 195 420883 2540.9 691 672 165.4
D 1 52 389628 2351.91 691 672 165.4
D 5 97 148877 896.16 691 672 165.4

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