ASTROSAT CZTI

Data Quality Report

Orbit 41821

Creation date: 2024-06-27T22:33:11.752643
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/AS1A12_093T02_9000005704_41821cztM0_level2.fits modeM0/AS1A12_093T02_9000005704_41821cztM0_level2_quad_clean.evt
Size (bytes)325,163,52092,606,400
Size310.1 MB 88.3 MB
Events in quadrant A3,066,266642,320
Events in quadrant B2,469,123662,415
Events in quadrant C3,439,353575,983
Events in quadrant D2,664,603566,545

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122252
B0103792
C0131872
D0111932

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5097160.313910%
B509770.137336%
C50972745.375711%
D5097561.098686%

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 7099 5098 4 4 0.06% 0.08%
B 7099 5098 3 3 0.04% 0.06%
C 7099 5098 269 269 3.79% 5.28%
D 7099 5098 55 55 0.77% 1.08%

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 10 83 552327 4340.66 621 609 127.1
A 12 189 78793 615.11 621 609 127.1
A 14 24 21066 160.94 621 609 127.1
B 0 245 16594 135.6 613 598 118.0
B 0 183 15143 123.3 613 598 118.0
B 15 85 14818 120.55 613 598 118.0
C 0 10 970876 7377.99 568 573 131.5
C 15 214 203941 1546.37 568 573 131.5
C 15 111 45190 339.26 568 573 131.5
D 13 249 131779 901.13 596 582 145.6
D 10 199 113299 774.2 596 582 145.6
D 5 222 42100 285.17 596 582 145.6

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