ASTROSAT CZTI

Data Quality Report

Orbit 51716

Creation date: 2025-04-22T12:01:23.249561
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/AS1A13_031T01_9000006462_51716cztM0_level2.fits modeM0/AS1A13_031T01_9000006462_51716cztM0_level2_quad_clean.evt
Size (bytes)550,851,840105,756,480
Size525.3 MB 100.9 MB
Events in quadrant A6,523,368650,439
Events in quadrant B4,062,969742,890
Events in quadrant C5,588,255644,035
Events in quadrant D3,626,041636,360

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0245743
B0174502
C0219922
D0163872

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A759684211.084781%
B75964195.516061%
C75966728.846761%
D75962112.777778%

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 7906 7598 410 410 5.19% 5.40%
B 7906 7598 44 44 0.56% 0.58%
C 7906 7598 354 354 4.48% 4.66%
D 7906 7598 13 13 0.16% 0.17%

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 78 1734358 8731.3 823 801 198.5
A 12 3 930310 4681.6 823 801 198.5
A 3 14 155622 779.78 823 801 198.5
B 1 223 242475 1346.24 832 798 179.5
B 8 128 116419 644.05 832 798 179.5
B 0 213 99616 550.46 832 798 179.5
C 15 231 713332 3349.24 789 784 212.7
C 12 254 531434 2494.25 789 784 212.7
C 0 192 308319 1445.53 789 784 212.7
D 12 218 62557 271.14 828 800 227.8
D 5 173 55000 237.96 828 800 227.8
D 6 228 54585 236.14 828 800 227.8

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