ASTROSAT CZTI

Data Quality Report

Orbit 58580

Creation date: 2026-07-26T19:08:51.711678
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_044T04_9000006592_58580cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58580cztM0_level2_quad_clean.evt
Size (bytes)449,887,68090,247,680
Size429.0 MB 86.1 MB
Events in quadrant A4,617,366566,347
Events in quadrant B3,842,738635,821
Events in quadrant C3,736,611566,693
Events in quadrant D3,966,340523,331

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182051
B0157201
C0156131
D0159061

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63084427.006975%
B63092063.265177%
C63092213.502932%
D63092824.469805%

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 7053 6308 315 315 4.47% 4.99%
B 7054 6309 61 61 0.86% 0.97%
C 7054 6310 140 140 1.98% 2.22%
D 7054 6309 207 207 2.93% 3.28%

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 10 17 1143457 6848.73 678 662 166.9
A 12 114 426560 2552.39 678 662 166.9
A 13 248 166956 996.59 678 662 166.9
B 4 171 341343 2324.28 684 659 146.6
B 0 171 203095 1381.09 684 659 146.6
B 6 255 191747 1303.67 684 659 146.6
C 13 3 578949 3114.1 674 667 185.7
C 12 252 166449 892.75 674 667 185.7
C 1 12 126394 677.05 674 667 185.7
D 8 240 462183 2422.0 673 644 190.6
D 2 31 275721 1443.51 673 644 190.6
D 3 12 240081 1256.49 673 644 190.6

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