ASTROSAT CZTI

Data Quality Report

Orbit 08845

Creation date: 2024-06-27T15:37:58.409919
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/AS1G07_087T01_9000001228_08845cztM0_level2.evt modeM0/AS1G07_087T01_9000001228_08845cztM0_level2_quad_clean.evt
Size (bytes)444,798,720102,291,840
Size424.2 MB 97.6 MB
Events in quadrant A3,269,577677,243
Events in quadrant B3,201,891684,429
Events in quadrant C2,930,329650,721
Events in quadrant D3,630,585635,599

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139512
B0137331
C0132541
D0150051

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64541091.688875%
B6454811.255036%
C6454500.774713%
D6454721.115587%

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 7589 6454 10 10 0.13% 0.15%
B 7589 6454 0 0 0.00% 0.00%
C 7589 6455 0 0 0.00% 0.00%
D 7589 6455 10 10 0.13% 0.15%

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 8 5 190051 1183.69 793 777 159.9
A 15 174 19417 116.57 793 777 159.9
A 0 226 7480 41.92 793 777 159.9
B 0 214 64530 422.38 793 775 150.9
B 0 219 24999 160.48 793 775 150.9
B 5 255 19904 126.73 793 775 150.9
C 1 16 6286 32.18 749 752 172.0
C 13 61 5722 28.9 749 752 172.0
C 1 3 2439 9.81 749 752 172.0
D 2 152 212677 1074.37 752 733 197.3
D 11 129 173933 877.97 752 733 197.3
D 8 195 146802 740.44 752 733 197.3

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