ASTROSAT CZTI

Data Quality Report

Orbit 54747

Creation date: 2025-11-10T20:46:02.435399
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_103T01_9000006524_54747cztM0_level2.fits modeM0/AS1A14_103T01_9000006524_54747cztM0_level2_quad_clean.evt
Size (bytes)564,137,28088,678,080
Size538.0 MB 84.6 MB
Events in quadrant A5,116,392600,970
Events in quadrant B8,525,663477,253
Events in quadrant C3,170,638600,303
Events in quadrant D3,569,261557,369

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0195851
B0296901
C0140661
D0152658

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64423705.743558%
B6442212633.002173%
C6443851.319261%
D64421782.763117%

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 7552 6442 288 288 3.81% 4.47%
B 7552 6442 2014 2014 26.67% 31.26%
C 7553 6443 40 40 0.53% 0.62%
D 7552 6442 138 138 1.83% 2.14%

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 12 115 2085327 12305.4 689 672 169.4
A 3 14 241976 1424.38 689 672 169.4
A 5 243 32768 189.46 689 672 169.4
B 2 249 5918642 49546.84 556 536 119.4
B 5 185 153033 1276.72 556 536 119.4
B 7 0 50363 417.16 556 536 119.4
C 13 3 121543 650.14 680 674 185.9
C 14 254 120599 645.06 680 674 185.9
C 6 223 82374 439.46 680 674 185.9
D 11 129 299619 1563.21 678 648 191.3
D 3 12 207487 1081.48 678 648 191.3
D 2 120 109513 569.21 678 648 191.3

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