ASTROSAT CZTI

Data Quality Report

Orbit 22667

Creation date: 2024-06-27T18:44:13.286500
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/AS1A08_007T01_9000003362_22667cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22667cztM0_level2_quad_clean.evt
Size (bytes)547,346,88084,205,440
Size522.0 MB 80.3 MB
Events in quadrant A3,381,266548,769
Events in quadrant B3,574,915552,278
Events in quadrant C3,353,517515,034
Events in quadrant D5,848,426502,576

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138891
B0146131
C0137721
D0219101

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61751011.635628%
B61761061.716321%
C61761362.202073%
D61765899.536917%

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 7505 6176 0 0 0.00% 0.00%
B 7506 6177 0 0 0.00% 0.00%
C 7506 6177 1 1 0.01% 0.02%
D 7506 6177 463 463 6.17% 7.50%

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 13 254 11544 62.42 876 862 171.1
A 0 226 7914 41.21 876 862 171.1
A 12 194 6393 32.32 876 862 171.1
B 0 229 52917 331.62 861 843 157.0
B 0 190 51798 324.49 861 843 157.0
B 0 230 33284 206.59 861 843 157.0
C 14 238 132711 707.61 819 826 186.4
C 10 22 16285 82.94 819 826 186.4
C 8 222 10703 52.99 819 826 186.4
D 1 52 1335380 6741.74 825 805 198.0
D 15 0 611141 3083.17 825 805 198.0
D 12 227 498325 2513.27 825 805 198.0

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