ASTROSAT CZTI

Data Quality Report

Orbit 04051

Creation date: 2024-06-27T14:36:47.039655
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/AS1G05_241T04_9000000518_04051cztM0_level2.evt modeM0/AS1G05_241T04_9000000518_04051cztM0_level2_quad_clean.evt
Size (bytes)419,987,52053,297,280
Size400.5 MB 50.8 MB
Events in quadrant A3,054,193300,646
Events in quadrant B3,308,143302,127
Events in quadrant C2,967,230293,517
Events in quadrant D2,970,132286,216

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131022
B0137141
C0128091
D0131411

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6171731.182953%
B6171931.507049%
C6171410.664398%
D6171540.875061%

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 7406 6171 3 3 0.04% 0.05%
B 7406 6171 17 17 0.23% 0.28%
C 7406 6171 4 4 0.05% 0.06%
D 7406 6171 21 21 0.28% 0.34%

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 0 118 35230 220.25 767 750 156.6
A 0 50 29359 182.75 767 750 156.6
A 8 15 21754 134.17 767 750 156.6
B 15 204 105526 709.91 775 759 147.6
B 7 252 95766 643.77 775 759 147.6
B 4 81 77372 519.13 775 759 147.6
C 5 254 42285 241.76 739 742 171.8
C 9 144 23164 130.49 739 742 171.8
C 1 16 11580 63.07 739 742 171.8
D 13 174 75219 418.26 738 716 178.1
D 13 239 63148 350.49 738 716 178.1
D 2 232 21348 115.83 738 716 178.1

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