ASTROSAT CZTI

Data Quality Report

Orbit 42648

Creation date: 2024-06-27T22:42:36.462143
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/AS1A05_174T01_9000005820_42648cztM0_level2.fits modeM0/AS1A05_174T01_9000005820_42648cztM0_level2_quad_clean.evt
Size (bytes)309,988,80090,394,560
Size295.6 MB 86.2 MB
Events in quadrant A2,834,438608,834
Events in quadrant B2,381,604627,377
Events in quadrant C2,557,854609,712
Events in quadrant D3,314,813543,843

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0330
C0330
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112572
B0102252
C0102372
D0130982

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4953180.363416%
B4953460.928730%
C495380.161518%
D49531713.452453%

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 7047 4955 9 9 0.13% 0.18%
B 7047 4955 32 32 0.45% 0.65%
C 7047 4955 7 7 0.10% 0.14%
D 7047 4954 156 156 2.21% 3.15%

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 525180 4341.7 586 574 120.8
A 7 3 32286 262.45 586 574 120.8
A 2 79 13703 108.66 586 574 120.8
B 3 112 97623 880.68 577 562 110.2
B 0 245 18760 165.12 577 562 110.2
B 12 111 13559 117.93 577 562 110.2
C 15 214 208688 1529.77 583 587 136.0
C 14 254 52683 382.96 583 587 136.0
C 3 233 17602 125.08 583 587 136.0
D 2 249 390675 2823.37 573 557 138.2
D 1 52 217851 1572.6 573 557 138.2
D 12 6 143935 1037.66 573 557 138.2

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