ASTROSAT CZTI

Data Quality Report

Orbit 04158

Creation date: 2024-06-27T14:38:12.102052
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/AS1G05_240T01_9000000536_04158cztM0_level2.evt modeM0/AS1G05_240T01_9000000536_04158cztM0_level2_quad_clean.evt
Size (bytes)535,826,88079,873,920
Size511.0 MB 76.2 MB
Events in quadrant A4,026,507469,568
Events in quadrant B4,110,587472,558
Events in quadrant C3,674,091462,669
Events in quadrant D3,866,295450,865

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173643
B0175512
C0166852
D0172502

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80971321.630233%
B80971381.704335%
C8097901.111523%
D8097921.136223%

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 8897 8100 26 26 0.29% 0.32%
B 8897 8100 4 4 0.04% 0.05%
C 8897 8100 0 0 0.00% 0.00%
D 8897 8100 21 21 0.24% 0.26%

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 0 199 93776 468.96 960 937 198.0
A 0 50 68307 340.31 960 937 198.0
A 15 234 50709 251.41 960 937 198.0
B 14 167 211454 1102.66 973 949 190.9
B 4 48 50336 258.7 973 949 190.9
B 15 204 50231 258.15 973 949 190.9
C 10 65 8905 36.43 935 939 218.7
C 13 61 7623 30.57 935 939 218.7
C 1 3 6892 27.23 935 939 218.7
D 10 172 142933 628.53 932 905 226.0
D 2 63 44572 193.24 932 905 226.0
D 12 233 42473 183.95 932 905 226.0

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