ASTROSAT CZTI

Data Quality Report

Orbit 26139

Creation date: 2024-06-27T19:25:15.797909
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_138T04_9000003776_26139cztM0_level2.evt modeM0/AS1A09_138T04_9000003776_26139cztM0_level2_quad_clean.evt
Size (bytes)475,240,320111,965,760
Size453.2 MB 106.8 MB
Events in quadrant A3,604,159732,086
Events in quadrant B3,312,600764,616
Events in quadrant C3,401,293733,646
Events in quadrant D3,644,171718,238

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149920
B0138750
C0141010
D0149860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6344390.614754%
B6343490.772505%
C6343961.513479%
D6343861.355825%

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 7559 6344 0 0 0.00% 0.00%
B 7558 6343 1 1 0.01% 0.02%
C 7558 6343 1 1 0.01% 0.02%
D 7558 6343 48 48 0.64% 0.76%

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 0 13 387019 2307.83 834 818 167.3
A 13 254 10559 58.21 834 818 167.3
A 3 137 7222 38.27 834 818 167.3
B 0 190 20030 120.8 838 818 159.0
B 12 111 18836 113.29 838 818 159.0
B 11 111 16825 100.65 838 818 159.0
C 14 238 132162 681.77 824 833 192.6
C 3 233 37584 190.78 824 833 192.6
C 2 16 21784 108.76 824 833 192.6
D 1 52 436054 2230.29 825 809 195.2
D 12 233 55656 281.05 825 809 195.2
D 2 234 26184 130.03 825 809 195.2

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