ASTROSAT CZTI

Data Quality Report

Orbit 46837

Creation date: 2024-06-27T23:28:18.101970
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/AS1A13_053T01_9000006274_46837cztM0_level2.fits modeM0/AS1A13_053T01_9000006274_46837cztM0_level2_quad_clean.evt
Size (bytes)470,352,960103,576,320
Size448.6 MB 98.8 MB
Events in quadrant A5,942,128705,920
Events in quadrant B3,962,046701,835
Events in quadrant C2,700,359699,523
Events in quadrant D4,339,137608,771

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216521
B0156261
C0122851
D0169331

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60192183.621864%
B60193656.064130%
C6019260.431965%
D60194166.911447%

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 7264 6020 45 45 0.62% 0.75%
B 7264 6020 278 278 3.83% 4.62%
C 7264 6020 3 3 0.04% 0.05%
D 7264 6020 333 333 4.58% 5.53%

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 10 83 3177579 22243.12 699 685 142.8
A 15 254 24908 169.6 699 685 142.8
A 9 191 15611 104.5 699 685 142.8
B 5 172 680248 5218.99 676 657 130.2
B 3 112 431390 3307.86 676 657 130.2
B 0 198 47097 356.64 676 657 130.2
C 14 254 33991 209.23 680 683 159.2
C 1 241 9659 56.38 680 683 159.2
C 3 233 5836 32.37 680 683 159.2
D 1 52 1247249 7595.94 664 640 164.1
D 13 249 203862 1238.29 664 640 164.1
D 10 181 160984 977.02 664 640 164.1

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