ASTROSAT CZTI

Data Quality Report

Orbit 04823

Creation date: 2024-06-27T14:47:31.847781
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_144T01_9000000612_04823cztM0_level2.evt modeM0/AS1G05_144T01_9000000612_04823cztM0_level2_quad_clean.evt
Size (bytes)575,628,48089,098,560
Size549.0 MB 85.0 MB
Events in quadrant A3,970,607549,530
Events in quadrant B4,798,106541,066
Events in quadrant C3,729,686556,409
Events in quadrant D4,425,479528,492

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170804
B0193383
C0164443
D0185193

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75002513.346667%
B75003284.373333%
C7500570.760000%
D75001572.093333%

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 8955 7503 93 93 1.04% 1.24%
B 8955 7503 200 200 2.23% 2.67%
C 8955 7503 19 19 0.21% 0.25%
D 8955 7503 117 117 1.31% 1.56%

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 50 444553 2487.31 859 839 178.4
A 13 251 90859 504.62 859 839 178.4
A 0 149 63711 352.44 859 839 178.4
B 10 16 923595 5509.2 863 841 167.5
B 8 3 172358 1024.02 863 841 167.5
B 14 167 155649 924.26 863 841 167.5
C 8 208 249923 1269.57 838 840 196.2
C 9 247 170497 864.74 838 840 196.2
C 12 4 28343 140.18 838 840 196.2
D 13 235 327731 1609.8 830 805 203.1
D 2 136 289323 1420.67 830 805 203.1
D 5 239 281259 1380.97 830 805 203.1

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