ASTROSAT CZTI

Data Quality Report

Orbit 04911

Creation date: 2024-06-27T14:48:46.483848
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_118T01_9000000622_04911cztM0_level2.evt modeM0/AS1G05_118T01_9000000622_04911cztM0_level2_quad_clean.evt
Size (bytes)611,916,48089,380,800
Size583.6 MB 85.2 MB
Events in quadrant A3,499,846554,147
Events in quadrant B3,768,433553,095
Events in quadrant C4,969,912540,028
Events in quadrant D5,773,853525,911

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159735
B0166704
C0204634
D0226034

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A12513186377920
B1-1-1
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76571101.436594%
B76571882.455270%
C765779810.421836%
D76574485.850855%

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 7787 7662 0 0 0.00% 0.00%
B 7787 7661 18 18 0.23% 0.23%
C 7787 7659 612 612 7.86% 7.99%
D 7787 7660 242 242 3.11% 3.16%

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 110304 611.65 868 847 179.0
A 13 251 23108 124.39 868 847 179.0
A 15 234 9916 50.68 868 847 179.0
B 8 3 142503 850.91 876 856 166.5
B 12 0 100546 598.86 876 856 166.5
B 0 219 39976 235.0 876 856 166.5
C 9 247 1741628 9329.99 812 814 186.6
C 1 16 25221 130.81 812 814 186.6
C 9 202 11507 57.31 812 814 186.6
D 2 63 1463915 7189.67 832 805 203.5
D 2 136 421982 2069.65 832 805 203.5
D 13 235 156717 766.15 832 805 203.5

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