ASTROSAT CZTI

Data Quality Report

Orbit 55444

Creation date: 2025-12-27T17:43:15.410091
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_099T01_9000006536_55444cztM0_level2.fits modeM0/AS1A14_099T01_9000006536_55444cztM0_level2_quad_clean.evt
Size (bytes)394,850,88096,491,520
Size376.6 MB 92.0 MB
Events in quadrant A3,536,805639,225
Events in quadrant B3,993,724639,897
Events in quadrant C2,904,366611,566
Events in quadrant D3,666,620570,603

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152332
B0168772
C0137422
D0156482

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66051972.982589%
B66056079.190008%
C6605751.135503%
D66052033.073429%

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 7650 6606 76 76 0.99% 1.15%
B 7650 6605 337 337 4.41% 5.10%
C 7650 6606 6 6 0.08% 0.09%
D 7650 6605 96 96 1.25% 1.45%

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 78 628804 3555.29 719 701 176.7
A 12 115 40588 225.77 719 701 176.7
A 15 32 27398 151.11 719 701 176.7
B 12 32 1199627 8344.21 670 645 143.7
B 10 247 91338 631.17 670 645 143.7
B 12 111 16860 112.85 670 645 143.7
C 13 3 94925 491.51 694 685 191.7
C 12 252 45664 234.59 694 685 191.7
C 15 147 33334 170.28 694 685 191.7
D 11 129 602757 3130.82 687 658 192.3
D 2 249 93436 482.43 687 658 192.3
D 5 173 52549 269.82 687 658 192.3

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