ASTROSAT CZTI

Data Quality Report

Orbit 33455

Creation date: 2024-06-27T20:49:03.135673
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_065T07_9000004798_33455cztM0_level2.evt modeM0/AS1A11_065T07_9000004798_33455cztM0_level2_quad_clean.evt
Size (bytes)462,481,92061,732,800
Size441.1 MB 58.9 MB
Events in quadrant A2,439,600385,334
Events in quadrant B3,302,604388,698
Events in quadrant C3,301,206375,538
Events in quadrant D4,608,621353,514

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104823
B0130592
C0130272
D0172162

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A522570.133971%
B52251583.023923%
C5225961.837321%
D52261322.525832%

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 7107 5226 0 0 0.00% 0.00%
B 7107 5225 125 125 1.76% 2.39%
C 7107 5226 92 92 1.29% 1.76%
D 7108 5227 114 114 1.60% 2.18%

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 6 12853 97.05 627 614 126.1
A 13 254 9387 69.56 627 614 126.1
A 3 137 6100 43.5 627 614 126.1
B 5 172 477629 4026.75 613 596 118.5
B 4 251 152728 1284.18 613 596 118.5
B 5 255 103590 869.4 613 596 118.5
C 9 187 479215 3449.37 598 602 138.8
C 15 214 229464 1649.41 598 602 138.8
C 0 10 191345 1374.69 598 602 138.8
D 8 195 1528780 10240.02 601 584 149.2
D 2 250 396480 2652.79 601 584 149.2
D 12 233 81804 544.23 601 584 149.2

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