ASTROSAT CZTI

Data Quality Report

Orbit 25919

Creation date: 2024-06-27T19:22:50.333146
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_214T01_9000003758_25919cztM0_level2.evt modeM0/AS1T03_214T01_9000003758_25919cztM0_level2_quad_clean.evt
Size (bytes)857,537,28064,840,320
Size817.8 MB 61.8 MB
Events in quadrant A15,474,355186,980
Events in quadrant B3,161,822448,680
Events in quadrant C3,195,897436,401
Events in quadrant D3,696,194433,715

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0504330
B0133990
C0135330
D0152910

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6536586289.687882%
B6537300.458926%
C6537691.055530%
D6537661.009637%

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 7491 6537 4936 4936 65.89% 75.51%
B 7492 6538 0 0 0.00% 0.00%
C 7492 6538 0 0 0.00% 0.00%
D 7492 6538 39 39 0.52% 0.60%

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 13765385 157589.32 437 428 87.3
A 12 16 15097 167.94 437 428 87.3
A 6 16 5691 60.25 437 428 87.3
B 0 219 54383 357.18 790 772 150.1
B 12 111 18647 119.09 790 772 150.1
B 11 111 16720 106.25 790 772 150.1
C 14 238 123041 685.79 767 771 178.3
C 3 233 72520 402.43 767 771 178.3
C 2 16 11064 57.73 767 771 178.3
D 1 52 493874 2679.84 771 751 184.0
D 13 168 196135 1061.8 771 751 184.0
D 7 80 44352 236.95 771 751 184.0

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