ASTROSAT CZTI

Data Quality Report

Orbit 24503

Creation date: 2024-06-27T19:06:39.102248
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/AS1T03_183T01_9000003606_24503cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24503cztM0_level2_quad_clean.evt
Size (bytes)542,450,880132,307,200
Size517.3 MB 126.2 MB
Events in quadrant A4,460,501909,779
Events in quadrant B4,325,769912,942
Events in quadrant C3,213,262883,077
Events in quadrant D4,000,332860,515

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176381
B0170451
C0137351
D0160171

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63173405.382302%
B63184156.568534%
C63181081.709402%
D63181762.785692%

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 7477 6318 102 102 1.36% 1.61%
B 7478 6319 194 194 2.59% 3.07%
C 7478 6319 3 3 0.04% 0.05%
D 7478 6319 143 143 1.91% 2.26%

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 14 111 994723 6148.25 816 802 161.7
A 4 2 322835 1992.05 816 802 161.7
A 13 254 9633 54.63 816 802 161.7
B 3 64 1193294 8147.12 795 779 146.4
B 12 111 16995 110.79 795 779 146.4
B 11 111 15296 99.18 795 779 146.4
C 14 238 128851 721.49 772 777 177.5
C 2 16 68914 383.84 772 777 177.5
C 7 247 6804 33.95 772 777 177.5
D 9 1 707871 3759.1 785 764 188.1
D 1 52 151848 803.19 785 764 188.1
D 12 218 78593 413.75 785 764 188.1

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