ASTROSAT CZTI

Data Quality Report

Orbit 26862

Creation date: 2024-06-27T19:33:46.163355
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_224T01_9000003868_26862cztM0_level2.evt modeM0/AS1T03_224T01_9000003868_26862cztM0_level2_quad_clean.evt
Size (bytes)548,305,92092,465,280
Size522.9 MB 88.2 MB
Events in quadrant A3,417,732601,103
Events in quadrant B5,258,063582,701
Events in quadrant C3,144,000596,853
Events in quadrant D4,347,672568,656

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142190
B0197950
C0132970
D0173120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6463440.680798%
B646289613.865676%
C6462430.665429%
D64621772.739090%

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 7613 6464 20 20 0.26% 0.31%
B 7612 6463 770 770 10.12% 11.91%
C 7612 6463 0 0 0.00% 0.00%
D 7612 6463 132 132 1.73% 2.04%

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 13 324932 2021.78 797 783 160.3
A 6 16 13499 79.31 797 783 160.3
A 13 254 10554 60.94 797 783 160.3
B 5 31 693104 4682.12 773 753 147.9
B 5 15 688719 4652.47 773 753 147.9
B 5 14 686836 4639.73 773 753 147.9
C 14 238 123597 676.21 772 777 181.6
C 13 61 5377 25.33 772 777 181.6
C 8 128 4501 20.5 772 777 181.6
D 7 80 665343 3740.85 760 744 177.7
D 1 52 376936 2117.49 760 744 177.7
D 2 250 272648 1530.48 760 744 177.7

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