ASTROSAT CZTI

Data Quality Report

Orbit 54894

Creation date: 2025-11-20T18:33:04.864858
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_039T06_9000006526_54894cztM0_level2.fits modeM0/AS1A14_039T06_9000006526_54894cztM0_level2_quad_clean.evt
Size (bytes)400,423,68097,220,160
Size381.9 MB 92.7 MB
Events in quadrant A3,689,428641,468
Events in quadrant B2,976,639688,577
Events in quadrant C3,875,697601,755
Events in quadrant D3,780,651563,499

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152022
B0134175
C0159369
D0155466

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6429891.384352%
B6427911.415902%
C64272283.547534%
D64262043.174603%

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 7549 6430 2 2 0.03% 0.03%
B 7549 6429 3 3 0.04% 0.05%
C 7549 6429 173 173 2.29% 2.69%
D 7548 6428 106 106 1.40% 1.65%

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 864012 4789.47 721 702 180.3
A 13 254 18954 101.26 721 702 180.3
A 4 3 13063 68.58 721 702 180.3
B 10 247 50362 329.61 706 680 150.7
B 5 185 45760 299.08 706 680 150.7
B 5 236 23908 154.1 706 680 150.7
C 6 223 741140 3913.95 691 684 189.2
C 4 5 140419 738.62 691 684 189.2
C 14 254 104800 550.34 691 684 189.2
D 10 181 252935 1293.21 693 664 195.1
D 6 46 216125 1104.51 693 664 195.1
D 1 31 160688 820.32 693 664 195.1

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