ASTROSAT CZTI

Data Quality Report

Orbit 53795

Creation date: 2025-09-07T19:18:06.881301
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_022T04_9000006506_53795cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53795cztM0_level2_quad_clean.evt
Size (bytes)1,098,169,92074,963,520
Size1.0 GB 71.5 MB
Events in quadrant A17,174,92091,352
Events in quadrant B3,977,255714,650
Events in quadrant C8,000,070520,622
Events in quadrant D10,938,346437,429

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05603112
B0169700
C0288500
D0375170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7252639788.210149%
B72531141.571763%
C7254154121.243452%
D7254236532.602702%

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 7252 7251 5879 5879 81.07% 81.08%
B 7253 7253 76 76 1.05% 1.05%
C 7254 7254 1040 1040 14.34% 14.34%
D 7254 7254 2044 2044 28.18% 28.18%

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 63 15122895 168747.94 356 348 89.6
A 3 78 360869 4022.95 356 348 89.6
A 8 249 152705 1700.11 356 348 89.6
B 8 234 217764 1333.41 748 720 162.8
B 7 0 187359 1146.62 748 720 162.8
B 5 185 169827 1038.91 748 720 162.8
C 15 224 3037330 16163.92 679 674 187.9
C 15 158 1793624 9543.75 679 674 187.9
C 12 2 133241 705.65 679 674 187.9
D 8 176 2751949 15297.32 630 603 179.9
D 1 241 2262805 12577.71 630 603 179.9
D 2 172 1078453 5992.78 630 603 179.9

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