ASTROSAT CZTI

Data Quality Report

Orbit 15609

Creation date: 2024-06-27T17:11:07.331276
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_031T01_9000002314_15609cztM0_level2.evt modeM0/AS1G08_031T01_9000002314_15609cztM0_level2_quad_clean.evt
Size (bytes)281,730,24045,662,400
Size268.7 MB 43.5 MB
Events in quadrant A1,975,058276,592
Events in quadrant B2,275,375279,199
Events in quadrant C2,034,760268,881
Events in quadrant D1,965,683267,164

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A084562
B094041
C085931
D085541

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4120230.558252%
B4120471.140777%
C4120621.504854%
D4120170.412621%

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 4521 4122 0 0 0.00% 0.00%
B 4521 4122 4 4 0.09% 0.10%
C 4521 4122 4 4 0.09% 0.10%
D 4521 4122 6 6 0.13% 0.15%

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 0 226 4470 37.2 510 498 106.8
A 12 194 3919 32.04 510 498 106.8
A 9 143 3667 29.68 510 498 106.8
B 4 251 200866 2026.1 506 493 98.9
B 4 173 23679 234.45 506 493 98.9
B 0 189 18510 182.18 506 493 98.9
C 14 238 74649 637.39 486 488 116.4
C 10 22 33063 279.97 486 488 116.4
C 7 247 13877 115.07 486 488 116.4
D 2 152 33563 269.44 499 484 122.8
D 2 234 19227 152.67 499 484 122.8
D 2 120 13342 104.73 499 484 122.8

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