ASTROSAT CZTI

Data Quality Report

Orbit 53686

Creation date: 2025-08-31T10:41:52.536276
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/AS1A14_022T05_9000006504_53686cztM0_level2.fits modeM0/AS1A14_022T05_9000006504_53686cztM0_level2_quad_clean.evt
Size (bytes)1,011,381,12073,293,120
Size964.5 MB 69.9 MB
Events in quadrant A14,368,647241,737
Events in quadrant B4,678,304651,573
Events in quadrant C13,155,961290,112
Events in quadrant D4,723,416573,603

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0472242
B0184692
C0435902
D0187722

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6626452168.231210%
B66266329.538183%
C6626393359.357078%
D66262033.063688%

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 7686 6626 4516 4516 58.76% 68.16%
B 7686 6626 431 431 5.61% 6.50%
C 7686 6626 3780 3780 49.18% 57.05%
D 7686 6626 172 172 2.24% 2.60%

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 3 63 11065412 82942.68 533 520 133.4
A 3 78 482011 3609.27 533 520 133.4
A 12 17 374418 2802.75 533 520 133.4
B 5 185 1710946 11213.02 703 678 152.5
B 10 254 64422 417.92 703 678 152.5
B 10 247 25992 165.96 703 678 152.5
C 1 241 5571749 42220.34 474 469 132.0
C 15 224 4523132 34273.7 474 469 132.0
C 2 12 643966 4876.55 474 469 132.0
D 10 172 1066643 5378.3 696 666 198.2
D 2 153 188848 949.46 696 666 198.2
D 7 70 141468 710.4 696 666 198.2

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