ASTROSAT CZTI

Data Quality Report

Orbit 17732

Creation date: 2024-06-27T17:40:08.851423
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/AS1T03_042T01_9000002630_17732cztM0_level2.evt modeM0/AS1T03_042T01_9000002630_17732cztM0_level2_quad_clean.evt
Size (bytes)465,088,320104,080,320
Size443.5 MB 99.3 MB
Events in quadrant A3,872,331679,059
Events in quadrant B3,192,179705,802
Events in quadrant C3,179,693665,744
Events in quadrant D3,394,008643,009

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158892
B0136862
C0136952
D0148572

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65744076.191056%
B6574500.760572%
C6574650.988744%
D6574751.140858%

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 7884 6575 250 250 3.17% 3.80%
B 7884 6575 1 1 0.01% 0.02%
C 7884 6575 0 0 0.00% 0.00%
D 7884 6575 51 51 0.65% 0.78%

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 15 174 880309 5670.64 773 758 155.1
A 15 31 16760 103.17 773 758 155.1
A 0 226 6666 38.09 773 758 155.1
B 0 219 20883 132.67 811 793 151.4
B 12 111 18150 114.62 811 793 151.4
B 11 111 15566 97.56 811 793 151.4
C 14 238 122738 681.62 773 778 178.9
C 3 233 24194 130.87 773 778 178.9
C 5 218 14075 74.32 773 778 178.9
D 7 238 205480 1007.83 763 748 203.1
D 12 227 157665 772.45 763 748 203.1
D 13 232 54633 265.26 763 748 203.1

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