ASTROSAT CZTI

Data Quality Report

Orbit 00672

Creation date: 2024-06-27T14:01:22.262388
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/AS1P01_141T01_9000000096_00672cztM0_level2.evt modeM0/AS1P01_141T01_9000000096_00672cztM0_level2_quad_clean.evt
Size (bytes)1,527,033,60071,118,720
Size1.4 GB 67.8 MB
Events in quadrant A11,434,330412,322
Events in quadrant B11,650,453416,237
Events in quadrant C10,527,139414,277
Events in quadrant D12,113,046359,780

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0396781
B0403021
C0370111
D0418401

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79945326.654991%
B79945356.692519%
C79944956.192144%
D769589811.669916%

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 8014 7995 1004 1004 12.53% 12.56%
B 8014 7995 1113 1113 13.89% 13.92%
C 8014 7995 787 787 9.82% 9.84%
D 8013 7697 1669 1669 20.83% 21.68%

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 12 236 80633 120.22 2887 2858 646.9
A 0 69 77819 115.87 2887 2858 646.9
A 13 160 36749 52.39 2887 2858 646.9
B 7 221 514951 745.18 2856 2875 687.2
B 4 250 117840 167.3 2856 2875 687.2
B 0 220 95530 134.83 2856 2875 687.2
C 9 52 82951 105.62 2650 2748 759.4
C 2 192 24913 29.19 2650 2748 759.4
C 15 241 19733 22.37 2650 2748 759.4
D 1 4 1487749 1862.23 2478 2582 797.5
D 12 237 284058 352.94 2478 2582 797.5
D 12 33 223922 277.54 2478 2582 797.5

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