ASTROSAT CZTI

Data Quality Report

Orbit 53046

Creation date: 2025-07-19T09:04:53.296879
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/AS1C09_011T07_9000006488_53046cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53046cztM0_level2_quad_clean.evt
Size (bytes)732,706,56090,391,680
Size698.8 MB 86.2 MB
Events in quadrant A9,474,268499,861
Events in quadrant B4,459,425664,902
Events in quadrant C7,095,070537,554
Events in quadrant D5,572,284564,372

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0328591
B0179321
C0258781
D0212481

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6738189128.064708%
B67382964.392995%
C6739105315.625464%
D67395107.567888%

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 7738 6739 1818 1818 23.49% 26.98%
B 7738 6739 217 217 2.80% 3.22%
C 7739 6740 1038 1038 13.41% 15.40%
D 7739 6740 496 496 6.41% 7.36%

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 9 191 3410476 21684.56 624 611 157.2
A 7 206 3319680 21107.16 624 611 157.2
A 15 174 120965 765.37 624 611 157.2
B 10 44 356392 2458.13 677 652 144.7
B 1 255 302003 2082.3 677 652 144.7
B 4 81 245628 1692.76 677 652 144.7
C 1 241 2245811 12908.37 630 626 173.9
C 15 224 1102583 6335.54 630 626 173.9
C 7 80 523239 3004.69 630 626 173.9
D 12 17 1233937 6522.54 656 626 189.1
D 2 62 331580 1750.3 656 626 189.1
D 3 224 325802 1719.74 656 626 189.1

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