ASTROSAT CZTI

Data Quality Report

Orbit 27548

Creation date: 2024-06-27T19:41:24.107031
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/AS1C05_019T04_9000003956_27548cztM0_level2.evt modeM0/AS1C05_019T04_9000003956_27548cztM0_level2_quad_clean.evt
Size (bytes)453,193,920107,688,960
Size432.2 MB 102.7 MB
Events in quadrant A2,970,621721,545
Events in quadrant B3,198,707733,127
Events in quadrant C3,010,952698,432
Events in quadrant D4,118,137670,212

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127980
B0133440
C0128950
D0163290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6269751.196363%
B62701071.706539%
C6270881.403509%
D62702514.003190%

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 7134 6269 0 0 0.00% 0.00%
B 7135 6270 2 2 0.03% 0.03%
C 7135 6271 0 0 0.00% 0.00%
D 7135 6270 179 179 2.51% 2.85%

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 9671 58.42 770 755 152.6
A 3 137 7189 42.16 770 755 152.6
A 0 226 6557 38.02 770 755 152.6
B 10 245 97167 671.17 764 745 143.7
B 3 64 86417 596.34 764 745 143.7
B 15 32 19608 131.3 764 745 143.7
C 14 238 120977 702.79 737 742 171.1
C 2 16 9788 52.88 737 742 171.1
C 7 221 5650 28.69 737 742 171.1
D 1 52 866020 5043.96 735 715 171.6
D 7 80 259136 1506.37 735 715 171.6
D 2 250 110944 642.54 735 715 171.6

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