ASTROSAT CZTI

Data Quality Report

Orbit 02991

Creation date: 2024-06-27T14:23:09.355455
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_238T05_9000000418_02991cztM0_level2.evt modeM0/AS1G05_238T05_9000000418_02991cztM0_level2_quad_clean.evt
Size (bytes)406,828,80048,657,600
Size388.0 MB 46.4 MB
Events in quadrant A3,566,022273,741
Events in quadrant B3,260,628277,625
Events in quadrant C2,403,285272,322
Events in quadrant D2,715,269262,553

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142453
B0135622
C0112522
D0121522

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55321522.747650%
B5532651.174982%
C553270.126537%
D5532430.777296%

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 9842 5534 116 116 1.18% 2.10%
B 9842 5534 48 48 0.49% 0.87%
C 9842 5534 5 5 0.05% 0.09%
D 9842 5534 36 36 0.37% 0.65%

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 13 9 1003210 8150.44 600 587 123.0
A 0 50 93458 754.96 600 587 123.0
A 14 249 62151 500.46 600 587 123.0
B 8 3 464258 3870.51 617 602 119.8
B 2 249 157983 1313.79 617 602 119.8
B 0 205 88827 736.49 617 602 119.8
C 6 80 68275 490.11 587 589 138.1
C 1 16 11987 82.53 587 589 138.1
C 15 208 11172 76.63 587 589 138.1
D 7 80 283517 1977.56 583 566 143.1
D 13 114 29803 204.34 583 566 143.1
D 9 35 23540 160.57 583 566 143.1

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