ASTROSAT CZTI

Data Quality Report

Orbit 14120

Creation date: 2024-06-27T16:50:30.514519
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/AS1A04_149T01_9000002082_14120cztM0_level2.evt modeM0/AS1A04_149T01_9000002082_14120cztM0_level2_quad_clean.evt
Size (bytes)864,671,040219,191,040
Size824.6 MB 209.0 MB
Events in quadrant A6,067,1131,456,957
Events in quadrant B6,530,1681,475,272
Events in quadrant C6,206,0371,422,010
Events in quadrant D6,498,7311,382,513

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02660
B02660
C02660
D02660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0268703
B0277872
C0266432
D0283082

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13057910.696944%
B130571280.980317%
C13057700.536111%
D130571341.026269%

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 14658 13061 5 5 0.03% 0.04%
B 14658 13061 7 7 0.05% 0.05%
C 14658 13061 4 4 0.03% 0.03%
D 14658 13061 58 58 0.40% 0.44%

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 12 189 98910 313.17 1527 1495 311.1
A 8 15 47042 146.42 1527 1495 311.1
A 12 96 29822 91.07 1527 1495 311.1
B 0 189 191836 657.39 1532 1492 289.5
B 0 85 119307 406.9 1532 1492 289.5
B 0 214 50252 168.4 1532 1492 289.5
C 3 233 393517 1149.23 1477 1481 341.1
C 0 207 24590 67.74 1477 1481 341.1
C 8 128 11876 30.47 1477 1481 341.1
D 2 152 472934 1322.27 1464 1422 356.6
D 1 52 244560 681.84 1464 1422 356.6
D 8 195 95954 265.1 1464 1422 356.6

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