ASTROSAT CZTI

Data Quality Report

Orbit 50730

Creation date: 2025-02-13T09:21:46.913765
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/AS1C07_001T01_9000006450_50730cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50730cztM0_level2_quad_clean.evt
Size (bytes)651,159,36097,542,720
Size621.0 MB 93.0 MB
Events in quadrant A5,090,578657,666
Events in quadrant B3,762,935732,306
Events in quadrant C9,955,635475,468
Events in quadrant D4,729,566580,331

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02049822
B01646834
C03470548
D01952330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72892843.896282%
B7285741.015786%
C7287216829.751612%
D72833795.203899%

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 7298 7297 265 265 3.63% 3.63%
B 7298 7294 39 39 0.53% 0.53%
C 7298 7296 1878 1878 25.73% 25.74%
D 7298 7294 363 363 4.97% 4.98%

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 12 80 1419578 7629.28 749 733 186.0
A 5 240 94901 506.35 749 733 186.0
A 0 31 93149 496.93 749 733 186.0
B 8 128 131392 807.81 755 727 161.8
B 4 216 93567 573.97 755 727 161.8
B 0 213 85696 525.31 755 727 161.8
C 15 179 2773913 15847.14 639 632 175.0
C 5 10 2576296 14717.91 639 632 175.0
C 9 38 697065 3979.57 639 632 175.0
D 1 47 706963 3597.74 708 683 196.3
D 2 249 325999 1657.13 708 683 196.3
D 7 96 179591 911.34 708 683 196.3

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