ASTROSAT CZTI

Data Quality Report

Orbit 13909

Creation date: 2024-06-27T16:47:44.738839
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/AS1A04_010T02_9000002048_13909cztM0_level2.evt modeM0/AS1A04_010T02_9000002048_13909cztM0_level2_quad_clean.evt
Size (bytes)92,658,24021,202,560
Size88.4 MB 20.2 MB
Events in quadrant A519,131149,963
Events in quadrant B535,206153,891
Events in quadrant C526,150149,519
Events in quadrant D1,161,065117,382

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021021
B021891
C021341
D040651

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A90710.110254%
B90730.330761%
C90710.110254%
D90725428.004410%

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 908 908 0 0 0.00% 0.00%
B 908 908 1 1 0.11% 0.11%
C 908 908 0 0 0.00% 0.00%
D 908 908 157 157 17.29% 17.29%

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 1 162 2507 84.44 134 131 28.1
A 0 226 1177 37.17 134 131 28.1
A 12 194 1045 32.48 134 131 28.1
B 0 189 6248 229.6 133 131 26.6
B 3 209 3294 118.72 133 131 26.6
B 12 111 2666 95.15 133 131 26.6
C 3 233 13749 428.5 131 131 31.8
C 13 61 909 24.48 131 131 31.8
C 14 220 661 16.68 131 131 31.8
D 13 122 641610 23360.71 111 108 27.5
D 1 52 87508 3182.73 111 108 27.5
D 15 145 3383 119.26 111 108 27.5

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