ASTROSAT CZTI

Data Quality Report

Orbit 09540

Creation date: 2024-06-27T15:47:27.814405
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/AS1G07_049T01_9000001352_09540cztM0_level2.evt modeM0/AS1G07_049T01_9000001352_09540cztM0_level2_quad_clean.evt
Size (bytes)437,662,080118,088,640
Size417.4 MB 112.6 MB
Events in quadrant A3,125,664804,596
Events in quadrant B3,089,824800,112
Events in quadrant C2,735,877787,219
Events in quadrant D3,890,992761,098

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131953
B0131992
C0124902
D0156822

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6064711.170844%
B6064821.352243%
C6064510.841029%
D60641893.116755%

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 7189 6067 1 1 0.01% 0.02%
B 7189 6066 14 14 0.19% 0.23%
C 7189 6067 11 11 0.15% 0.18%
D 7189 6066 219 219 3.05% 3.61%

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 1 162 170294 1164.73 718 704 145.6
A 1 178 67244 456.99 718 704 145.6
A 1 161 67210 456.76 718 704 145.6
B 4 80 213973 1607.26 717 701 132.7
B 0 214 28595 210.21 717 701 132.7
B 0 246 15777 113.62 717 701 132.7
C 4 254 55497 347.34 686 689 157.8
C 13 61 5269 29.03 686 689 157.8
C 8 222 2907 14.06 686 689 157.8
D 1 52 1125007 6130.7 681 664 183.4
D 8 195 45677 245.44 681 664 183.4
D 7 55 27791 147.91 681 664 183.4

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