ASTROSAT CZTI

Data Quality Report

Orbit 47769

Creation date: 2024-07-28T20:50:02.625334
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/AS1C09_004T02_9000006348_47769cztM0_level2.fits modeM0/AS1C09_004T02_9000006348_47769cztM0_level2_quad_clean.evt
Size (bytes)685,123,200109,224,000
Size653.4 MB 104.2 MB
Events in quadrant A7,555,661770,221
Events in quadrant B4,543,550783,601
Events in quadrant C7,676,665580,328
Events in quadrant D5,023,750667,714

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0276500
B0185840
C0280330
D0201011

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72562823.886439%
B72571752.411465%
C7257173823.949290%
D72564696.463616%

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 7256 7256 13 13 0.18% 0.18%
B 7257 7257 77 77 1.06% 1.06%
C 7257 7257 1414 1414 19.48% 19.48%
D 7256 7256 190 190 2.62% 2.62%

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 4290268 25458.85 807 789 168.5
A 13 248 53651 313.75 807 789 168.5
A 9 191 33672 195.17 807 789 168.5
B 0 186 740249 4658.12 801 773 158.7
B 5 255 177157 1111.08 801 773 158.7
B 0 183 105672 660.78 801 773 158.7
C 12 2 4932016 30756.87 682 682 160.3
C 14 254 54180 333.67 682 682 160.3
C 5 248 10555 61.58 682 682 160.3
D 2 165 1121643 5674.3 791 766 197.5
D 7 67 230164 1161.3 791 766 197.5
D 12 233 152132 766.27 791 766 197.5

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