ASTROSAT CZTI

Data Quality Report

Orbit 11349

Creation date: 2024-06-27T16:11:39.570430
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/AS1G08_062T01_9000001660_11349cztM0_level2.evt modeM0/AS1G08_062T01_9000001660_11349cztM0_level2_quad_clean.evt
Size (bytes)710,979,84081,653,760
Size678.0 MB 77.9 MB
Events in quadrant A3,445,458539,119
Events in quadrant B3,830,787534,839
Events in quadrant C2,948,756545,522
Events in quadrant D10,873,860405,660

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141723
B0156352
C0130742
D0366932

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6401340.531167%
B64012604.061865%
C6401180.281206%
D6401308148.133104%

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 7591 6402 5 5 0.07% 0.08%
B 7591 6402 131 131 1.73% 2.05%
C 7591 6402 2 2 0.03% 0.03%
D 7591 6402 2493 2493 32.84% 38.94%

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 13 251 296676 1936.83 758 742 152.8
A 1 162 64252 415.66 758 742 152.8
A 1 178 38543 247.4 758 742 152.8
B 4 239 749114 5255.62 755 737 142.4
B 3 189 32466 222.82 755 737 142.4
B 15 204 27973 191.27 755 737 142.4
C 4 175 8129 41.8 753 758 176.3
C 14 234 7532 38.41 753 758 176.3
C 13 61 5488 26.82 753 758 176.3
D 13 152 6535540 45950.37 591 576 142.2
D 10 253 971278 6825.46 591 576 142.2
D 2 14 671246 4715.79 591 576 142.2

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