ASTROSAT CZTI

Data Quality Report

Orbit 04889

Creation date: 2024-06-27T14:48:28.088126
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/AS1G05_237T01_9000000620_04889cztM0_level2.evt modeM0/AS1G05_237T01_9000000620_04889cztM0_level2_quad_clean.evt
Size (bytes)417,677,76076,645,440
Size398.3 MB 73.1 MB
Events in quadrant A2,977,596480,319
Events in quadrant B2,960,692484,244
Events in quadrant C2,788,522476,474
Events in quadrant D3,506,686452,823

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126872
B0125541
C0124421
D0144391

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6117530.866438%
B6117440.719307%
C6117270.441393%
D6117891.454962%

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 7212 6117 3 3 0.04% 0.05%
B 7212 6117 0 0 0.00% 0.00%
C 7212 6117 0 0 0.00% 0.00%
D 7212 6117 47 47 0.65% 0.77%

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 0 31 71942 468.11 737 722 152.1
A 13 14 35751 230.24 737 722 152.1
A 8 15 18668 117.96 737 722 152.1
B 15 204 42205 291.48 740 727 142.3
B 15 54 23726 161.62 740 727 142.3
B 0 183 13009 86.31 740 727 142.3
C 14 67 14370 83.12 707 714 164.3
C 1 16 6815 37.13 707 714 164.3
C 13 61 5810 31.02 707 714 164.3
D 2 136 304097 1723.29 711 690 176.1
D 13 235 129225 730.05 711 690 176.1
D 13 105 113500 640.74 711 690 176.1

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