ASTROSAT CZTI

Data Quality Report

Orbit 03440

Creation date: 2024-06-27T14:29:03.059397
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/AS1G05_167T01_9000000456_03440cztM0_level2.evt modeM0/AS1G05_167T01_9000000456_03440cztM0_level2_quad_clean.evt
Size (bytes)716,126,40056,707,200
Size683.0 MB 54.1 MB
Events in quadrant A3,284,196355,912
Events in quadrant B3,522,318349,875
Events in quadrant C11,391,037212,932
Events in quadrant D3,049,605342,852

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139562
B0145591
C0381851
D0135931

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6512781.197789%
B6512661.013514%
C6512328950.506757%
D6512650.998157%

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 7552 6512 8 8 0.11% 0.12%
B 7552 6512 2 2 0.03% 0.03%
C 7552 6512 3067 3067 40.61% 47.10%
D 7552 6512 13 13 0.17% 0.20%

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 14 249 133024 827.5 777 762 159.8
A 15 249 84144 521.68 777 762 159.8
A 0 149 36439 223.21 777 762 159.8
B 15 204 353474 2315.97 784 765 152.3
B 14 167 50450 326.24 784 765 152.3
B 0 228 17721 111.34 784 765 152.3
C 1 192 8807860 64142.03 594 600 137.3
C 7 220 243389 1768.2 594 600 137.3
C 14 223 12035 83.28 594 600 137.3
D 2 37 108272 584.58 753 733 184.0
D 2 31 22220 116.8 753 733 184.0
D 9 85 21396 112.32 753 733 184.0

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