ASTROSAT CZTI

Data Quality Report

Orbit 19311

Creation date: 2024-06-27T18:01:15.441166
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/AS1A05_204T01_9000002856_19311cztM0_level2.evt modeM0/AS1A05_204T01_9000002856_19311cztM0_level2_quad_clean.evt
Size (bytes)682,761,60090,812,160
Size651.1 MB 86.6 MB
Events in quadrant A3,171,835610,064
Events in quadrant B3,320,988613,100
Events in quadrant C3,265,448590,831
Events in quadrant D10,477,702480,411

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136422
B0140422
C0137892
D0355832

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6526390.597610%
B6526661.011339%
C65261081.654919%
D6526251038.461538%

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 7526 6527 0 0 0.00% 0.00%
B 7526 6527 0 0 0.00% 0.00%
C 7526 6527 0 0 0.00% 0.00%
D 7526 6526 2324 2324 30.88% 35.61%

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 4 2 10070 56.22 820 803 164.8
A 13 254 7509 40.68 820 803 164.8
A 0 226 7190 38.74 820 803 164.8
B 0 229 52105 332.43 813 793 154.4
B 0 190 48269 307.58 813 793 154.4
B 15 19 21296 132.83 813 793 154.4
C 14 238 122467 656.73 792 797 185.3
C 3 233 47012 249.45 792 797 185.3
C 9 54 6215 29.24 792 797 185.3
D 10 66 4572160 27530.72 683 665 166.1
D 7 238 1490815 8974.07 683 665 166.1
D 1 52 1263115 7602.8 683 665 166.1

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