ASTROSAT CZTI

Data Quality Report

Orbit 20240511_A13_080T02_9000006242_level2

Creation date: 2024-05-18T09:23:10.272086
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_080T02_9000006242cztM0_level2.fits modeM0/AS1A13_080T02_9000006242cztM0_level2_quad_clean.evt
Size (bytes)482,826,240747,613,440
Size460.5 MB 713.0 MB
Events in quadrant A2,795,0444,940,209
Events in quadrant B2,704,5604,834,080
Events in quadrant C2,854,2664,782,450
Events in quadrant D2,341,7104,165,447

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011540
B011540
C011540
D011540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01915630
B01397310
C01218270
D01704270

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0660
C0680
D0680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5717919083.336889%
B5718128605.001661%
C571817031.229429%
D5718047008.219657%

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 82072 57163 0 0 0.00% 0.00%
B 82072 57104 0 0 0.00% 0.00%
C 82072 57178 0 0 0.00% 0.00%
D 82072 57096 0 0 0.00% 0.00%

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 7 110 2338 8.69 729 684 190.3
A 14 95 2164 7.78 729 684 190.3
A 0 29 2122 7.56 729 684 190.3
B 2 9 2534 12.85 715 682 144.1
B 2 8 2091 9.78 715 682 144.1
B 3 17 1967 8.92 715 682 144.1
C 1 81 2274 8.02 753 703 195.8
C 3 202 2269 8.0 753 703 195.8
C 1 80 2157 7.43 753 703 195.8
D 10 189 1833 6.52 672 611 187.5
D 15 47 1779 6.23 672 611 187.5
D 15 63 1745 6.05 672 611 187.5

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