ASTROSAT CZTI

Data Quality Report

Orbit 05509

Creation date: 2024-06-27T14:56:04.685786
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/AS1A02_162T01_9000000704_05509cztM0_level2.evt modeM0/AS1A02_162T01_9000000704_05509cztM0_level2_quad_clean.evt
Size (bytes)665,838,72086,071,680
Size635.0 MB 82.1 MB
Events in quadrant A3,252,681553,191
Events in quadrant B8,979,663480,662
Events in quadrant C3,341,818556,024
Events in quadrant D4,114,185525,546

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014572108
B032154629
C014700126
D017137167

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70481011.433031%
B6978172824.763543%
C7042590.837830%
D70352233.169865%

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 7954 7100 10 10 0.13% 0.14%
B 7954 7090 1433 1433 18.02% 20.21%
C 7954 7097 3 3 0.04% 0.04%
D 7954 7099 142 142 1.79% 2.00%

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 39192 225.34 829 810 170.3
A 3 1 15846 88.27 829 810 170.3
A 12 194 8224 43.53 829 810 170.3
B 15 255 5275204 35113.78 776 755 150.2
B 15 204 576897 3835.57 776 755 150.2
B 15 54 24863 160.5 776 755 150.2
C 1 16 177055 938.67 804 808 187.8
C 9 247 12775 63.73 804 808 187.8
C 9 221 8267 39.73 804 808 187.8
D 12 233 464683 2342.34 802 775 198.1
D 2 136 221879 1116.39 802 775 198.1
D 2 152 194956 980.45 802 775 198.1

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