ASTROSAT CZTI

Data Quality Report

Orbit 16616

Creation date: 2024-06-27T17:25:09.790962
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_064T01_9000002450_16616cztM0_level2.evt modeM0/AS1A05_064T01_9000002450_16616cztM0_level2_quad_clean.evt
Size (bytes)435,695,040124,542,720
Size415.5 MB 118.8 MB
Events in quadrant A2,901,523846,675
Events in quadrant B3,337,712857,342
Events in quadrant C3,208,328843,646
Events in quadrant D3,355,067820,846

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123602
B0138281
C0134761
D0135541

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5776751.298476%
B5776931.610111%
C5776941.627424%
D57761071.852493%

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 7132 5778 1 1 0.01% 0.02%
B 7132 5778 10 10 0.14% 0.17%
C 7132 5778 0 0 0.00% 0.00%
D 7132 5778 25 25 0.35% 0.43%

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 69 35755 239.75 738 724 146.1
A 15 174 13198 85.37 738 724 146.1
A 15 223 7557 46.76 738 724 146.1
B 15 35 171476 1262.91 738 720 135.2
B 7 220 76497 560.45 738 720 135.2
B 0 189 70391 515.29 738 720 135.2
C 3 233 204336 1228.41 724 729 165.7
C 14 238 112154 672.25 724 729 165.7
C 7 247 66271 395.43 724 729 165.7
D 1 52 387577 2203.77 731 710 175.5
D 10 70 143362 812.61 731 710 175.5
D 2 234 26538 147.13 731 710 175.5

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