ASTROSAT CZTI

Data Quality Report

Orbit 15315

Creation date: 2024-06-27T17:06:46.436125
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_073T01_9000002260_15315cztM0_level2.evt modeM0/AS1T02_073T01_9000002260_15315cztM0_level2_quad_clean.evt
Size (bytes)453,283,20097,090,560
Size432.3 MB 92.6 MB
Events in quadrant A3,202,046622,940
Events in quadrant B3,306,498635,775
Events in quadrant C3,455,343627,139
Events in quadrant D3,320,528599,608

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137893
B0139452
C0142472
D0143592

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6525691.057471%
B65251021.563218%
C6525751.149425%
D6525791.210728%

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 9136 6528 0 0 0.00% 0.00%
B 9136 6527 3 3 0.03% 0.05%
C 9136 6528 0 0 0.00% 0.00%
D 9136 6528 7 7 0.08% 0.11%

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 9 143 7621 40.98 831 814 166.1
A 0 226 7332 39.24 831 814 166.1
A 12 194 6196 32.4 831 814 166.1
B 12 111 18961 115.34 832 812 157.4
B 11 111 16133 97.36 832 812 157.4
B 14 111 13417 80.1 832 812 157.4
C 3 233 239016 1264.22 825 831 188.4
C 13 61 5854 26.66 825 831 188.4
C 7 247 1898 5.66 825 831 188.4
D 13 122 123100 616.65 818 796 198.3
D 2 33 48528 240.66 818 796 198.3
D 12 110 27804 136.17 818 796 198.3

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