ASTROSAT CZTI

Data Quality Report

Orbit 18904

Creation date: 2024-06-27T17:56:20.824488
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/AS1A05_163T01_9000002820_18904cztM0_level2.evt modeM0/AS1A05_163T01_9000002820_18904cztM0_level2_quad_clean.evt
Size (bytes)574,824,96093,689,280
Size548.2 MB 89.3 MB
Events in quadrant A4,089,393613,043
Events in quadrant B6,137,155613,153
Events in quadrant C3,257,549595,173
Events in quadrant D3,505,120583,860

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156811
B0222301
C0131771
D0142831

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61883565.753070%
B6188112418.164189%
C61891001.615770%
D6189841.357247%

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 7498 6189 224 224 2.99% 3.62%
B 7498 6188 718 718 9.58% 11.60%
C 7499 6190 2 2 0.03% 0.03%
D 7499 6190 18 18 0.24% 0.29%

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 14 235 946588 5801.68 812 797 163.0
A 11 29 10095 57.04 812 797 163.0
A 13 254 9585 53.91 812 797 163.0
B 3 112 3053275 21327.38 755 739 143.1
B 7 220 72809 503.54 755 739 143.1
B 0 189 17778 119.05 755 739 143.1
C 14 238 125537 689.37 783 791 181.0
C 3 233 48170 261.82 783 791 181.0
C 5 112 31722 170.93 783 791 181.0
D 9 1 209209 1071.42 800 779 194.5
D 1 52 176696 904.29 800 779 194.5
D 7 238 70339 357.57 800 779 194.5

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