ASTROSAT CZTI

Data Quality Report

Orbit 26345

Creation date: 2024-06-27T19:27:41.935696
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/AS1A09_008T02_9000003796_26345cztM0_level2.evt modeM0/AS1A09_008T02_9000003796_26345cztM0_level2_quad_clean.evt
Size (bytes)732,983,040117,659,520
Size699.0 MB 112.2 MB
Events in quadrant A3,103,989854,080
Events in quadrant B3,186,290881,395
Events in quadrant C3,462,489845,159
Events in quadrant D12,025,943548,191

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129820
B0132160
C0139630
D0399000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6208200.322165%
B6207400.644434%
C6207951.530530%
D6207347756.017400%

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 7548 6209 0 0 0.00% 0.00%
B 7547 6208 1 1 0.01% 0.02%
C 7547 6208 9 9 0.12% 0.14%
D 7547 6208 3245 3245 43.00% 52.27%

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 13 254 10275 60.05 803 787 158.0
A 3 137 6834 38.27 803 787 158.0
A 0 226 6786 37.97 803 787 158.0
B 12 111 17299 110.62 809 790 149.2
B 11 111 15711 99.98 809 790 149.2
B 0 230 14082 89.06 809 790 149.2
C 3 233 234924 1290.53 789 797 181.4
C 14 238 130131 712.9 789 797 181.4
C 2 16 22547 119.89 789 797 181.4
D 1 52 9770278 72057.84 581 569 135.6
D 2 234 18694 133.68 581 569 135.6
D 11 176 17020 121.34 581 569 135.6

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