ASTROSAT CZTI

Data Quality Report

Orbit 31540

Creation date: 2024-06-27T20:29:43.806033
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/AS1A10_056T01_9000004598_31540cztM0_level2.evt modeM0/AS1A10_056T01_9000004598_31540cztM0_level2_quad_clean.evt
Size (bytes)532,883,520111,942,720
Size508.2 MB 106.8 MB
Events in quadrant A3,078,153752,398
Events in quadrant B5,061,927772,496
Events in quadrant C3,367,953743,409
Events in quadrant D4,213,131691,930

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131522
B0192392
C0140122
D0166552

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6165140.227088%
B6165841.362530%
C61661242.011028%
D61662624.249108%

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 8705 6167 0 0 0.00% 0.00%
B 8705 6166 4 4 0.05% 0.06%
C 8706 6167 11 11 0.13% 0.18%
D 8706 6168 194 194 2.23% 3.15%

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 13 254 10686 62.42 796 781 158.7
A 3 137 7483 42.23 796 781 158.7
A 0 226 6654 37.01 796 781 158.7
B 6 159 1745837 11756.13 802 784 148.4
B 4 80 114972 769.27 802 784 148.4
B 10 247 27190 177.89 802 784 148.4
C 14 238 128871 710.44 781 788 180.3
C 3 233 57891 316.74 781 788 180.3
C 0 10 49306 269.12 781 788 180.3
D 8 195 612176 3401.62 760 740 179.7
D 12 218 435250 2417.32 760 740 179.7
D 13 249 187016 1036.31 760 740 179.7

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