ASTROSAT CZTI

Data Quality Report

Orbit 53964

Creation date: 2025-09-19T13:47:23.566875
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_057T04_9000006508_53964cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53964cztM0_level2_quad_clean.evt
Size (bytes)602,202,24087,874,560
Size574.3 MB 83.8 MB
Events in quadrant A3,267,242642,899
Events in quadrant B5,158,956612,757
Events in quadrant C3,155,433611,673
Events in quadrant D10,220,600353,672

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140705
B0195659
C0137302
D0347332

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6297480.762268%
B629873311.638615%
C6298260.412829%
D6298270642.966021%

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 7544 6299 20 20 0.27% 0.32%
B 7543 6299 573 573 7.60% 9.10%
C 7543 6299 22 22 0.29% 0.35%
D 7543 6299 2262 2262 29.99% 35.91%

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 15 174 122877 705.09 694 677 173.3
A 7 14 118840 681.8 694 677 173.3
A 12 17 59138 337.32 694 677 173.3
B 5 250 1703504 11958.62 671 648 142.4
B 0 213 484078 3394.98 671 648 142.4
B 6 255 83319 580.57 671 648 142.4
C 1 241 102882 535.58 683 677 190.8
C 12 2 66666 345.8 683 677 190.8
C 12 252 62070 321.71 683 677 190.8
D 8 176 6456683 43219.17 514 490 149.4
D 6 239 741171 4958.28 514 490 149.4
D 3 12 216084 1443.23 514 490 149.4

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