ASTROSAT CZTI

Data Quality Report

Orbit 10879

Creation date: 2024-06-27T16:05:05.486405
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/AS1A04_130T01_9000001572_10879cztM0_level2.evt modeM0/AS1A04_130T01_9000001572_10879cztM0_level2_quad_clean.evt
Size (bytes)529,637,76076,207,680
Size505.1 MB 72.7 MB
Events in quadrant A4,412,102471,993
Events in quadrant B4,505,203475,438
Events in quadrant C2,710,048477,058
Events in quadrant D3,994,483452,462

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171462
B0175481
C0124431
D0162721

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61725218.441348%
B61724286.934543%
C617270.113415%
D6172711.150356%

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 7127 6173 376 376 5.28% 6.09%
B 7127 6173 238 238 3.34% 3.86%
C 7127 6173 1 1 0.01% 0.02%
D 7127 6173 46 46 0.65% 0.75%

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 8 5 1685897 11698.13 701 683 144.1
A 11 29 16064 106.77 701 683 144.1
A 0 226 6427 39.87 701 683 144.1
B 4 239 1724821 12740.8 703 687 135.3
B 0 187 23814 170.9 703 687 135.3
B 12 111 15422 108.89 703 687 135.3
C 14 234 7837 44.14 693 696 161.8
C 13 61 5004 26.63 693 696 161.8
C 8 222 1823 6.97 693 696 161.8
D 1 52 993189 5926.54 689 669 167.5
D 5 222 167580 996.66 689 669 167.5
D 13 152 76574 453.24 689 669 167.5

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