ASTROSAT CZTI

Data Quality Report

Orbit 50909

Creation date: 2025-02-25T13:54:15.993882
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/AS1C07_001T01_9000006450_50909cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50909cztM0_level2_quad_clean.evt
Size (bytes)678,240,00090,633,600
Size646.8 MB 86.4 MB
Events in quadrant A12,721,436407,659
Events in quadrant B3,447,644685,787
Events in quadrant C4,766,613595,539
Events in quadrant D3,635,978574,439

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0425391
B0152561
C0186201
D0160831

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6896303644.025522%
B6896821.189095%
C68963254.712877%
D6896981.421114%

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 7691 6896 2963 2963 38.53% 42.97%
B 7691 6897 27 27 0.35% 0.39%
C 7691 6897 316 316 4.11% 4.58%
D 7691 6897 88 88 1.14% 1.28%

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 4 9228626 56773.84 642 625 162.5
A 4 3 245238 1504.94 642 625 162.5
A 8 38 123845 758.09 642 625 162.5
B 4 81 251499 1633.04 714 689 153.6
B 8 128 87477 565.08 714 689 153.6
B 0 245 45335 290.69 714 689 153.6
C 12 252 721616 3804.56 685 678 189.5
C 12 247 354778 1868.67 685 678 189.5
C 3 233 354684 1868.17 685 678 189.5
D 2 249 429416 2237.7 685 662 191.6
D 2 120 48637 250.39 685 662 191.6
D 3 12 47912 246.6 685 662 191.6

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