ASTROSAT CZTI

Data Quality Report

Orbit 15076

Creation date: 2024-06-27T17:03:23.985182
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/AS1T02_060T01_9000002216_15076cztM0_level2.evt modeM0/AS1T02_060T01_9000002216_15076cztM0_level2_quad_clean.evt
Size (bytes)1,270,307,520241,295,040
Size1.2 GB 230.1 MB
Events in quadrant A8,443,8631,540,569
Events in quadrant B9,219,5661,559,586
Events in quadrant C10,944,2961,497,927
Events in quadrant D8,632,1091,454,806

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0371474
B0389173
C0449853
D0383903

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A182141550.850994%
B182142211.213352%
C182142411.323158%
D182142021.109037%

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 20225 18216 0 0 0.00% 0.00%
B 20225 18217 33 33 0.16% 0.18%
C 20225 18215 14 14 0.07% 0.08%
D 20225 18216 68 68 0.34% 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 0 226 18862 37.83 2193 2148 441.8
A 12 189 17352 34.41 2193 2148 441.8
A 12 194 15980 31.31 2193 2148 441.8
B 3 64 450269 1076.45 2179 2125 416.3
B 10 245 178323 423.23 2179 2125 416.3
B 12 111 52321 120.57 2179 2125 416.3
C 3 233 2601672 5288.84 2123 2134 491.5
C 3 232 29330 55.33 2123 2134 491.5
C 3 234 20370 37.1 2123 2134 491.5
D 13 249 263882 509.11 2121 2061 514.3
D 13 104 111360 212.53 2121 2061 514.3
D 10 70 104382 198.96 2121 2061 514.3

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