ASTROSAT CZTI

Data Quality Report

Orbit 09915

Creation date: 2024-06-27T15:52:10.306927
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/AS1A03_009T01_9000001412_09915cztM0_level2.evt modeM0/AS1A03_009T01_9000001412_09915cztM0_level2_quad_clean.evt
Size (bytes)391,184,64063,619,200
Size373.1 MB 60.7 MB
Events in quadrant A2,739,662391,079
Events in quadrant B2,600,908404,065
Events in quadrant C2,389,595399,843
Events in quadrant D3,766,544370,254

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01062

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01161040
B01115227
C01059624
D01477158

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5149571.107011%
B5153681.319620%
C5154150.291036%
D51481152.233877%

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 6519 5158 29 29 0.44% 0.56%
B 6520 5160 4 4 0.06% 0.08%
C 6520 5159 0 0 0.00% 0.00%
D 6520 5161 90 90 1.38% 1.74%

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 15 239 197649 1569.59 617 603 125.5
A 14 254 153156 1215.17 617 603 125.5
A 15 174 7201 52.56 617 603 125.5
B 0 214 49977 415.55 629 613 118.8
B 4 239 30237 249.38 629 613 118.8
B 4 81 23257 190.62 629 613 118.8
C 9 221 6527 41.76 610 612 141.7
C 13 61 4573 27.96 610 612 141.7
C 12 4 3551 20.75 610 612 141.7
D 8 195 500743 3262.34 590 574 153.3
D 2 16 317651 2068.13 590 574 153.3
D 2 152 150978 981.01 590 574 153.3

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