ASTROSAT CZTI

Data Quality Report

Orbit 06474

Creation date: 2024-06-27T15:07:42.256361
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/AS1G06_139T02_9000000862_06474cztM0_level2.evt modeM0/AS1G06_139T02_9000000862_06474cztM0_level2_quad_clean.evt
Size (bytes)513,276,48087,238,080
Size489.5 MB 83.2 MB
Events in quadrant A3,969,145532,832
Events in quadrant B3,666,199537,520
Events in quadrant C3,600,306529,472
Events in quadrant D3,793,676514,168

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169601
B0159040
C0159560
D0163260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75851952.570864%
B75851331.753461%
C7585330.435069%
D75851041.371127%

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 7585 7585 2 2 0.03% 0.03%
B 7585 7585 3 3 0.04% 0.04%
C 7585 7585 0 0 0.00% 0.00%
D 7585 7585 26 26 0.34% 0.34%

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 15 236 420251 2219.15 913 891 189.0
A 15 239 13626 67.39 913 891 189.0
A 8 15 11089 53.97 913 891 189.0
B 4 81 60363 331.22 917 894 179.5
B 0 219 30272 163.62 917 894 179.5
B 12 111 18324 97.08 917 894 179.5
C 1 16 98813 474.96 885 889 206.2
C 8 128 20042 92.9 885 889 206.2
C 12 4 10254 45.42 885 889 206.2
D 2 152 109584 491.78 888 861 221.1
D 8 195 102384 459.21 888 861 221.1
D 2 136 76247 340.99 888 861 221.1

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