ASTROSAT CZTI

Data Quality Report

Orbit 46849

Creation date: 2024-06-27T23:28:27.321965
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_053T01_9000006274_46849cztM0_level2.fits modeM0/AS1A13_053T01_9000006274_46849cztM0_level2_quad_clean.evt
Size (bytes)443,652,48097,827,840
Size423.1 MB 93.3 MB
Events in quadrant A5,696,142652,827
Events in quadrant B3,177,607673,723
Events in quadrant C2,667,813648,910
Events in quadrant D4,416,089568,339

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204513
B0133741
C0124291
D0173411

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59881752.922512%
B5988671.118904%
C5988360.601202%
D59894467.446986%

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 7068 5989 41 41 0.58% 0.68%
B 7068 5989 14 14 0.20% 0.23%
C 7068 5989 18 18 0.25% 0.30%
D 7069 5990 328 328 4.64% 5.48%

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 3003242 21675.58 665 653 138.5
A 7 3 57965 413.73 665 653 138.5
A 13 248 48554 345.8 665 653 138.5
B 3 112 398695 3066.89 660 640 129.8
B 0 200 93850 718.15 660 640 129.8
B 0 198 24128 180.97 660 640 129.8
C 1 241 85572 554.87 649 652 153.0
C 0 207 39869 256.24 649 652 153.0
C 12 250 10142 62.01 649 652 153.0
D 13 249 1125724 6934.85 638 616 162.2
D 1 52 551599 3396.1 638 616 162.2
D 12 233 166799 1024.3 638 616 162.2

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