ASTROSAT CZTI

Data Quality Report

Orbit 51403

Creation date: 2025-03-30T18:39:42.514938
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/AS1C07_001T03_9000006456_51403cztM0_level2.fits modeM0/AS1C07_001T03_9000006456_51403cztM0_level2_quad_clean.evt
Size (bytes)885,084,48086,719,680
Size844.1 MB 82.7 MB
Events in quadrant A10,053,880523,209
Events in quadrant B5,047,363672,714
Events in quadrant C9,016,394481,013
Events in quadrant D8,117,892471,110

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0346903
B0197051
C0315491
D0288541

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6843145921.321058%
B68442854.164231%
C6844183826.855640%
D6844143120.908825%

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 7673 6844 1224 1224 15.95% 17.88%
B 7674 6845 145 145 1.89% 2.12%
C 7674 6845 1344 1344 17.51% 19.63%
D 7674 6845 1360 1360 17.72% 19.87%

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 3 3242483 19377.77 677 659 167.3
A 8 249 1700153 10158.6 677 659 167.3
A 15 174 874854 5225.44 677 659 167.3
B 5 173 857070 5636.67 711 687 151.9
B 10 254 544554 3579.7 711 687 151.9
B 5 185 262254 1721.62 711 687 151.9
C 15 179 3851646 21875.34 634 627 176.0
C 3 233 686210 3894.39 634 627 176.0
C 10 171 662573 3760.12 634 627 176.0
D 15 94 2411417 13451.49 635 610 179.2
D 3 12 1747799 9748.72 635 610 179.2
D 6 42 438199 2441.6 635 610 179.2

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