ASTROSAT CZTI

Data Quality Report

Orbit 34908

Creation date: 2024-06-27T21:06:56.710920
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_065T21_9000005000_34908cztM0_level2.evt modeM0/AS1A11_065T21_9000005000_34908cztM0_level2_quad_clean.evt
Size (bytes)508,757,76099,184,320
Size485.2 MB 94.6 MB
Events in quadrant A3,067,693652,007
Events in quadrant B3,687,767648,095
Events in quadrant C3,437,715646,654
Events in quadrant D4,772,061601,949

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133993
B0151362
C0138882
D0185952

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A652590.137931%
B65251692.590038%
C6525841.287356%
D65251682.574713%

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 9391 6527 1 1 0.01% 0.02%
B 9391 6527 125 125 1.33% 1.92%
C 9391 6527 65 65 0.69% 1.00%
D 9391 6527 166 166 1.77% 2.54%

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 62508 400.68 764 748 154.1
A 7 16 21445 134.27 764 748 154.1
A 15 169 19722 123.1 764 748 154.1
B 5 172 521591 3578.04 752 731 145.6
B 5 255 75785 515.58 752 731 145.6
B 0 190 39461 266.06 752 731 145.6
C 15 214 273787 1590.0 741 746 171.7
C 0 10 223606 1297.78 741 746 171.7
C 14 67 27082 153.36 741 746 171.7
D 8 195 936363 5224.0 732 712 179.1
D 13 249 282750 1574.7 732 712 179.1
D 1 52 239785 1334.81 732 712 179.1

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