ASTROSAT CZTI

Data Quality Report

Orbit 54877

Creation date: 2025-11-19T14:20:04.372763
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_54877cztM0_level2.fits modeM0/AS1A14_039T06_9000006526_54877cztM0_level2_quad_clean.evt
Size (bytes)392,054,40099,192,960
Size373.9 MB 94.6 MB
Events in quadrant A3,786,398644,553
Events in quadrant B3,163,789694,895
Events in quadrant C3,555,731612,045
Events in quadrant D3,478,127578,594

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157542
B0144732
C0156492
D0152852

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6793991.457383%
B6793891.310172%
C67931271.869572%
D6793851.251288%

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 7788 6793 20 20 0.26% 0.29%
B 7788 6793 21 21 0.27% 0.31%
C 7788 6793 80 80 1.03% 1.18%
D 7788 6793 43 43 0.55% 0.63%

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 856667 4782.16 723 705 179.0
A 9 129 52269 288.08 723 705 179.0
A 4 13 28048 152.76 723 705 179.0
B 5 185 268221 1739.02 713 684 153.8
B 10 247 23101 145.71 713 684 153.8
B 0 245 19872 124.72 713 684 153.8
C 4 5 371089 1935.83 698 690 191.3
C 14 254 168216 875.54 698 690 191.3
C 6 223 70672 365.75 698 690 191.3
D 6 239 228767 1148.57 699 670 198.6
D 6 46 89415 446.87 699 670 198.6
D 2 252 71221 355.26 699 670 198.6

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