ASTROSAT CZTI

Data Quality Report

Orbit 48535

Creation date: 2024-09-19T20:19:25.151571
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/AS1A13_037T01_9000006436_48535cztM0_level2.fits modeM0/AS1A13_037T01_9000006436_48535cztM0_level2_quad_clean.evt
Size (bytes)568,238,400102,191,040
Size541.9 MB 97.5 MB
Events in quadrant A6,932,282695,712
Events in quadrant B3,241,967734,564
Events in quadrant C2,835,457708,220
Events in quadrant D7,500,006484,285

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0254671
B0144932
C0138091
D0274781

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67602053.032544%
B67591472.174878%
C6760430.636095%
D6760174925.872781%

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 7785 6761 4 4 0.05% 0.06%
B 7784 6760 25 25 0.32% 0.37%
C 7785 6761 4 4 0.05% 0.06%
D 7785 6761 1457 1457 18.72% 21.55%

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 10 83 3993133 26551.97 721 706 150.4
A 12 189 128498 849.89 721 706 150.4
A 13 248 15592 99.0 721 706 150.4
B 0 183 187184 1300.46 728 703 143.4
B 5 255 142964 992.08 728 703 143.4
B 12 16 28291 192.39 728 703 143.4
C 14 254 25055 143.84 718 720 169.2
C 12 250 7872 42.27 718 720 169.2
C 13 61 4768 23.93 718 720 169.2
D 2 165 4841706 30571.04 633 615 158.4
D 2 249 71794 449.49 633 615 158.4
D 7 96 67595 422.97 633 615 158.4

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