ASTROSAT CZTI

Data Quality Report

Orbit 48480

Creation date: 2024-09-14T19:33:43.797575
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/AS1A13_081T01_9000006428_48480cztM0_level2.fits modeM0/AS1A13_081T01_9000006428_48480cztM0_level2_quad_clean.evt
Size (bytes)492,240,960115,384,320
Size469.4 MB 110.0 MB
Events in quadrant A7,355,619771,505
Events in quadrant B3,249,952794,854
Events in quadrant C3,125,101746,049
Events in quadrant D3,914,778664,950

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0278000
B0151960
C0151610
D0173190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7418761.024535%
B7418220.296576%
C7418150.202211%
D74182353.167970%

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 7418 7418 2 2 0.03% 0.03%
B 7418 7418 5 5 0.07% 0.07%
C 7418 7418 14 14 0.19% 0.19%
D 7418 7418 223 223 3.01% 3.01%

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 10 83 4270916 25821.49 786 770 165.4
A 7 3 39018 231.28 786 770 165.4
A 13 254 13988 79.93 786 770 165.4
B 0 186 66462 425.45 782 756 154.4
B 8 234 29536 186.35 782 756 154.4
B 12 3 29140 183.79 782 756 154.4
C 1 3 66577 364.58 766 768 180.5
C 14 254 21812 116.58 766 768 180.5
C 14 67 16452 86.89 766 768 180.5
D 2 249 410294 2153.58 758 732 190.2
D 12 233 332475 1744.39 758 732 190.2
D 10 199 90996 474.63 758 732 190.2

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