ASTROSAT CZTI

Data Quality Report

Orbit 52981

Creation date: 2025-07-15T10:06:12.049808
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_003T01_9000006486_52981cztM0_level2.fits modeM0/AS1A13_003T01_9000006486_52981cztM0_level2_quad_clean.evt
Size (bytes)1,071,993,60087,117,120
Size1022.3 MB 83.1 MB
Events in quadrant A18,671,04193,870
Events in quadrant B4,441,807775,599
Events in quadrant C5,126,455663,126
Events in quadrant D10,851,134568,692

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0605820
B0184870
C0207290
D0375110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76347634100.000000%
B76343194.178674%
C76354626.051081%
D7635221028.945645%

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 7634 7633 6740 6740 88.29% 88.30%
B 7634 7634 219 219 2.87% 2.87%
C 7635 7635 324 324 4.24% 4.24%
D 7635 7635 2033 2033 26.63% 26.63%

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 9 191 18005479 546581.64 125 122 32.9
A 7 206 60779 1841.34 125 122 32.9
A 10 253 26847 811.28 125 122 32.9
B 10 63 654956 3717.72 817 788 176.0
B 7 0 109325 616.83 817 788 176.0
B 4 81 90593 510.37 817 788 176.0
C 9 38 565936 2665.38 784 776 212.0
C 4 5 330540 1555.22 784 776 212.0
C 13 3 308778 1452.58 784 776 212.0
D 0 5 3844027 19054.21 710 678 201.7
D 8 176 1850815 9172.45 710 678 201.7
D 6 42 774206 3834.93 710 678 201.7

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