ASTROSAT CZTI

Data Quality Report

Orbit 13127

Creation date: 2024-06-27T16:36:39.779942
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/AS1G08_031T02_9000001934_13127cztM0_level2.evt modeM0/AS1G08_031T02_9000001934_13127cztM0_level2_quad_clean.evt
Size (bytes)642,899,520110,508,480
Size613.1 MB 105.4 MB
Events in quadrant A3,255,230766,067
Events in quadrant B4,276,177755,522
Events in quadrant C2,897,183791,449
Events in quadrant D8,617,677595,675

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138983
B0169102
C0129342
D0299862

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6269440.701866%
B62695608.932844%
C626990.143564%
D6269187729.940979%

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 7595 6271 27 27 0.36% 0.43%
B 7595 6271 284 284 3.74% 4.53%
C 7595 6271 0 0 0.00% 0.00%
D 7595 6271 1686 1686 22.20% 26.89%

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 270462 1825.84 744 732 147.7
A 15 223 39562 262.85 744 732 147.7
A 12 189 34825 230.78 744 732 147.7
B 4 239 827600 6221.44 723 706 132.9
B 0 85 493848 3710.33 723 706 132.9
B 3 64 40482 299.27 723 706 132.9
C 14 225 9085 49.75 739 743 167.7
C 12 4 6978 37.18 739 743 167.7
C 13 61 5378 27.64 739 743 167.7
D 13 122 5027687 34674.51 611 594 145.0
D 1 52 1170851 8071.88 611 594 145.0
D 10 157 58018 396.08 611 594 145.0

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