ASTROSAT CZTI

Data Quality Report

Orbit 15849

Creation date: 2024-06-27T17:14:19.399495
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_143T01_9000002344_15849cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15849cztM0_level2_quad_clean.evt
Size (bytes)454,942,080106,741,440
Size433.9 MB 101.8 MB
Events in quadrant A3,743,043697,989
Events in quadrant B3,441,002734,674
Events in quadrant C3,203,686696,750
Events in quadrant D2,972,726674,251

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151593
B0141192
C0132712
D0128742

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61451141.855167%
B6145751.220504%
C6145600.976404%
D614590.146461%

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 7511 6147 63 63 0.84% 1.02%
B 7511 6147 17 17 0.23% 0.28%
C 7511 6147 0 0 0.00% 0.00%
D 7511 6147 3 3 0.04% 0.05%

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 15 239 349086 2197.24 793 779 158.5
A 15 157 330885 2082.42 793 779 158.5
A 9 143 14162 84.42 793 779 158.5
B 4 173 116833 755.83 812 794 153.5
B 0 229 61138 393.05 812 794 153.5
B 0 228 30682 194.68 812 794 153.5
C 14 238 121579 667.93 779 788 180.8
C 0 207 22031 117.47 779 788 180.8
C 3 233 16248 85.49 779 788 180.8
D 2 234 22973 118.21 779 758 187.9
D 2 120 10413 51.37 779 758 187.9
D 14 226 7924 38.13 779 758 187.9

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