ASTROSAT CZTI

Data Quality Report

Orbit 19420

Creation date: 2024-06-27T18:02:37.640412
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/AS1A05_226T09_9000002884_19420cztM0_level2.evt modeM0/AS1A05_226T09_9000002884_19420cztM0_level2_quad_clean.evt
Size (bytes)481,870,08067,164,480
Size459.5 MB 64.1 MB
Events in quadrant A3,214,128405,127
Events in quadrant B3,499,801404,676
Events in quadrant C3,240,573385,711
Events in quadrant D4,187,034373,920

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137042
B0144342
C0137022
D0167942

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6653190.285585%
B6653761.142342%
C6653610.916880%
D66531311.969037%

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 7678 6653 0 0 0.00% 0.00%
B 7678 6653 23 23 0.30% 0.35%
C 7678 6653 1 1 0.01% 0.02%
D 7678 6653 110 110 1.43% 1.65%

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 9 143 23442 136.09 826 810 166.3
A 13 254 9053 49.57 826 810 166.3
A 0 226 7260 38.79 826 810 166.3
B 7 220 180450 1138.19 825 803 157.8
B 0 198 34557 213.85 825 803 157.8
B 0 230 34039 210.57 825 803 157.8
C 14 238 124007 669.29 787 790 184.1
C 3 233 30157 159.52 787 790 184.1
C 9 221 13383 68.4 787 790 184.1
D 7 238 743312 3856.54 790 766 192.5
D 1 52 260428 1348.6 790 766 192.5
D 12 218 170869 883.46 790 766 192.5

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