ASTROSAT CZTI

Data Quality Report

Orbit 11148

Creation date: 2024-06-27T16:08:55.168226
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/AS1A04_180T01_9000001622_11148cztM0_level2.evt modeM0/AS1A04_180T01_9000001622_11148cztM0_level2_quad_clean.evt
Size (bytes)2,708,112,960362,911,680
Size2.5 GB 346.1 MB
Events in quadrant A26,519,6512,214,416
Events in quadrant B19,487,9002,334,661
Events in quadrant C13,923,5772,308,144
Events in quadrant D20,141,8412,147,466

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A099046570
B076542299
C060380238
D079107303

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0660
C0660
D0660

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05920
B05922
C05922
D05922

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A28867294610.205425%
B2889514515.021630%
C289012850.986125%
D2888914855.140365%

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 35628 28903 1757 1757 4.93% 6.08%
B 35628 28939 627 627 1.76% 2.17%
C 35628 28934 22 22 0.06% 0.08%
D 35628 28928 991 991 2.78% 3.43%

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 8 5 6797006 9650.56 3522 3456 704.0
A 14 238 4721267 6701.88 3522 3456 704.0
A 8 15 706877 999.24 3522 3456 704.0
B 4 239 2869350 4200.87 3630 3548 682.2
B 10 16 1178501 1722.32 3630 3548 682.2
B 15 204 480919 699.76 3630 3548 682.2
C 9 54 98884 117.5 3516 3540 811.4
C 9 204 83554 98.61 3516 3540 811.4
C 13 61 26040 27.73 3516 3540 811.4
D 1 52 2489276 3043.74 3427 3333 816.7
D 11 129 1410644 1723.09 3427 3333 816.7
D 10 253 1176917 1436.91 3427 3333 816.7

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