ASTROSAT CZTI

Data Quality Report

Orbit 25615

Creation date: 2024-06-27T19:19:33.911651
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/AS1A09_081T01_9000003730_25615cztM0_level2.evt modeM0/AS1A09_081T01_9000003730_25615cztM0_level2_quad_clean.evt
Size (bytes)440,170,56090,826,560
Size419.8 MB 86.6 MB
Events in quadrant A3,241,508584,599
Events in quadrant B3,093,418596,628
Events in quadrant C3,047,406568,401
Events in quadrant D3,515,291556,606

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136630
B0133520
C0131540
D0146570

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6365610.958366%
B6366280.439837%
C6366500.785423%
D6366881.382344%

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 7355 6366 25 25 0.34% 0.39%
B 7356 6367 0 0 0.00% 0.00%
C 7356 6367 0 0 0.00% 0.00%
D 7356 6367 62 62 0.84% 0.97%

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 13 124715 804.3 759 743 154.1
A 8 192 121237 781.74 759 743 154.1
A 6 16 36625 232.79 759 743 154.1
B 0 219 58802 403.28 761 741 144.0
B 0 245 20217 135.28 761 741 144.0
B 0 190 18227 121.45 761 741 144.0
C 14 238 117440 673.35 737 741 173.3
C 5 112 42736 242.31 737 741 173.3
C 3 233 11954 64.7 737 741 173.3
D 1 52 337650 1866.82 742 720 180.5
D 8 195 203476 1123.41 742 720 180.5
D 7 238 121353 668.39 742 720 180.5

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