ASTROSAT CZTI

Data Quality Report

Orbit 27821

Creation date: 2024-06-27T19:44:50.566091
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/AS1A10_048T08_9000004020_27821cztM0_level2.evt modeM0/AS1A10_048T08_9000004020_27821cztM0_level2_quad_clean.evt
Size (bytes)489,329,28095,532,480
Size466.7 MB 91.1 MB
Events in quadrant A3,467,295634,122
Events in quadrant B3,510,569642,591
Events in quadrant C3,997,433596,405
Events in quadrant D3,422,539586,385

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141770
B0143550
C0159380
D0141330

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62141051.689733%
B62141342.156421%
C62142954.747345%
D6214791.271323%

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 7489 6214 9 9 0.12% 0.14%
B 7489 6214 10 10 0.13% 0.16%
C 7489 6214 102 102 1.36% 1.64%
D 7489 6214 23 23 0.31% 0.37%

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 13 170 178272 1051.66 839 825 168.7
A 2 79 33998 196.6 839 825 168.7
A 13 248 13014 72.24 839 825 168.7
B 15 33 92424 590.67 834 816 155.1
B 5 172 46212 292.71 834 816 155.1
B 0 230 43443 274.85 834 816 155.1
C 3 233 736177 4039.07 783 790 182.1
C 14 238 126277 689.23 783 790 182.1
C 15 208 75261 409.03 783 790 182.1
D 1 52 209281 1096.31 798 777 190.2
D 2 250 77088 401.24 798 777 190.2
D 12 233 35784 184.07 798 777 190.2

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