ASTROSAT CZTI

Data Quality Report

Orbit 04945

Creation date: 2024-06-27T14:49:10.310319
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_157T01_9000000626_04945cztM0_level2.evt modeM0/AS1G05_157T01_9000000626_04945cztM0_level2_quad_clean.evt
Size (bytes)506,848,32069,174,720
Size483.4 MB 66.0 MB
Events in quadrant A4,927,624413,012
Events in quadrant B3,209,192415,462
Events in quadrant C2,845,096423,595
Events in quadrant D3,935,148397,743

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190632
B0136511
C0129781
D0159781

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A637683513.095985%
B63761231.929109%
C6376721.129235%
D63762213.466123%

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 7356 6376 737 737 10.02% 11.56%
B 7356 6376 42 42 0.57% 0.66%
C 7356 6376 0 0 0.00% 0.00%
D 7356 6376 143 143 1.94% 2.24%

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 31 2234864 15745.38 689 674 141.9
A 0 50 28948 199.26 689 674 141.9
A 13 251 8043 51.93 689 674 141.9
B 10 16 189100 1326.78 746 728 142.0
B 15 204 68464 477.09 746 728 142.0
B 0 219 37441 258.58 746 728 142.0
C 13 61 6071 31.79 726 729 168.1
C 12 4 4389 21.78 726 729 168.1
C 1 16 3572 16.92 726 729 168.1
D 2 33 418921 2391.39 716 695 174.9
D 2 234 264318 1507.38 716 695 174.9
D 7 67 137298 781.09 716 695 174.9

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