ASTROSAT CZTI

Data Quality Report

Orbit 50604

Creation date: 2025-02-04T22:11:20.063541
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/AS1T05_239T01_9000006444_50604cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50604cztM0_level2_quad_clean.evt
Size (bytes)726,140,16083,016,000
Size692.5 MB 79.2 MB
Events in quadrant A5,971,744562,971
Events in quadrant B9,885,579425,108
Events in quadrant C5,481,116542,604
Events in quadrant D5,034,927526,739

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222211
B0339154
C0208251
D0195061

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65386149.391251%
B6537256239.192290%
C65375778.826679%
D65383445.261548%

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 7343 6539 606 606 8.25% 9.27%
B 7341 6537 2020 2020 27.52% 30.90%
C 7342 6538 473 473 6.44% 7.23%
D 7343 6539 284 284 3.87% 4.34%

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 80 1402540 8626.99 654 638 162.5
A 12 250 541074 3325.72 654 638 162.5
A 10 251 519557 3193.31 654 638 162.5
B 4 170 5592966 45642.1 576 556 122.5
B 5 172 1232579 10055.08 576 556 122.5
B 5 32 152423 1239.45 576 556 122.5
C 15 158 2440142 13395.44 649 644 182.1
C 1 3 89051 485.45 649 644 182.1
C 0 208 66166 359.79 649 644 182.1
D 2 165 418819 2354.51 647 627 177.6
D 2 226 359812 2022.29 647 627 177.6
D 2 249 272861 1532.74 647 627 177.6

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