ASTROSAT CZTI

Data Quality Report

Orbit 55282

Creation date: 2025-12-16T21:54:38.975266
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_009T01_9000006534_55282cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55282cztM0_level2_quad_clean.evt
Size (bytes)370,126,08096,160,320
Size353.0 MB 91.7 MB
Events in quadrant A3,157,130622,299
Events in quadrant B2,821,872669,653
Events in quadrant C3,330,017594,255
Events in quadrant D3,872,292560,225

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143021
B0136461
C0149661
D0160917

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6669951.424501%
B6670510.764618%
C66701061.589205%
D66691642.459139%

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 7579 6669 38 38 0.50% 0.57%
B 7580 6671 1 1 0.01% 0.01%
C 7580 6671 61 61 0.80% 0.91%
D 7579 6670 133 133 1.75% 1.99%

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 0 8 211648 1230.31 699 680 171.5
A 7 7 106376 616.39 699 680 171.5
A 4 3 50192 288.74 699 680 171.5
B 0 182 49238 327.47 688 664 148.3
B 12 111 17893 116.15 688 664 148.3
B 11 111 16844 109.08 688 664 148.3
C 13 3 217070 1162.52 676 668 186.1
C 10 22 179997 963.36 676 668 186.1
C 12 2 68566 364.75 676 668 186.1
D 11 176 333429 1747.17 678 647 190.5
D 6 42 220023 1151.77 678 647 190.5
D 11 129 199524 1044.15 678 647 190.5

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