ASTROSAT CZTI

Data Quality Report

Orbit 54536

Creation date: 2025-10-27T16:36:10.513581
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_127T09_9000006520_54536cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54536cztM0_level2_quad_clean.evt
Size (bytes)504,230,400100,019,520
Size480.9 MB 95.4 MB
Events in quadrant A4,481,428657,412
Events in quadrant B4,328,980698,927
Events in quadrant C5,314,673592,745
Events in quadrant D3,988,654585,192

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01808977
B01792735
C02093373
D01697222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01411
C01420
D01410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7087841.185269%
B71031882.646769%
C70954866.849894%
D71081381.941474%

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 7121 7111 77 77 1.08% 1.08%
B 7122 7118 124 124 1.74% 1.74%
C 7122 7111 468 468 6.57% 6.58%
D 7122 7118 146 146 2.05% 2.05%

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 14 620361 3325.05 752 733 186.4
A 11 3 419319 2246.22 752 733 186.4
A 13 248 306121 1638.77 752 733 186.4
B 10 14 705341 4405.47 740 714 159.9
B 2 249 479324 2992.36 740 714 159.9
B 0 213 78454 486.05 740 714 159.9
C 12 252 1176083 6034.12 713 708 194.8
C 13 3 750464 3849.08 713 708 194.8
C 4 5 268890 1376.79 713 708 194.8
D 3 224 415119 2033.49 724 693 203.8
D 2 172 157415 769.0 724 693 203.8
D 13 84 102045 497.31 724 693 203.8

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