ASTROSAT CZTI

Data Quality Report

Orbit 20759

Creation date: 2024-06-27T18:19:16.618203
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/AS1A05_013T01_9000003070_20759cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20759cztM0_level2_quad_clean.evt
Size (bytes)501,719,04097,292,160
Size478.5 MB 92.8 MB
Events in quadrant A3,289,280641,709
Events in quadrant B3,411,961632,111
Events in quadrant C3,125,074612,204
Events in quadrant D4,922,667602,485

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138971
B0143091
C0136101
D0191631

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6566851.294548%
B6566981.492537%
C6566851.294548%
D65661382.101736%

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 7401 6566 9 9 0.12% 0.14%
B 7401 6567 25 25 0.34% 0.38%
C 7401 6567 1 1 0.01% 0.02%
D 7401 6567 75 75 1.01% 1.14%

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 5 16 157096 951.21 813 795 164.3
A 0 226 7152 38.69 813 795 164.3
A 3 137 6584 35.23 813 795 164.3
B 7 220 175739 1160.14 794 775 150.8
B 3 64 38169 247.95 794 775 150.8
B 0 197 21454 137.12 794 775 150.8
C 14 238 121707 680.23 762 766 177.8
C 7 247 33151 182.15 762 766 177.8
C 13 61 5322 25.63 762 766 177.8
D 12 227 941342 5015.75 779 758 187.5
D 1 52 682819 3637.15 779 758 187.5
D 1 20 198805 1056.1 779 758 187.5

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