ASTROSAT CZTI

Data Quality Report

Orbit 36738

Creation date: 2024-06-27T21:30:59.837995
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/AS1A11_101T01_9000005238_36738cztM0_level2.evt modeM0/AS1A11_101T01_9000005238_36738cztM0_level2_quad_clean.evt
Size (bytes)380,148,48077,391,360
Size362.5 MB 73.8 MB
Events in quadrant A2,538,072502,863
Events in quadrant B2,767,881523,513
Events in quadrant C3,189,370489,716
Events in quadrant D2,674,284473,940

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107243
B0114282
C0125572
D0112762

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A503840.079397%
B50381342.659786%
C50381843.652243%
D5038681.349742%

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 7069 5039 0 0 0.00% 0.00%
B 7069 5039 55 55 0.78% 1.09%
C 7069 5039 151 151 2.14% 3.00%
D 7069 5039 60 60 0.85% 1.19%

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 204834 1716.68 595 586 119.0
A 9 143 10652 84.6 595 586 119.0
A 7 16 8617 67.5 595 586 119.0
B 5 200 212632 1906.1 592 577 111.3
B 5 255 52610 467.71 592 577 111.3
B 4 171 45502 403.82 592 577 111.3
C 0 10 645065 4833.22 573 578 133.3
C 15 214 208601 1560.03 573 578 133.3
C 14 254 86342 643.17 573 578 133.3
D 2 250 164459 1184.54 574 560 138.4
D 13 249 132681 954.88 574 560 138.4
D 13 171 75091 538.66 574 560 138.4

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