ASTROSAT CZTI

Data Quality Report

Orbit 16618

Creation date: 2024-06-27T17:25:11.779110
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_16618cztM0_level2.evt modeM0/AS1A05_064T01_9000002450_16618cztM0_level2_quad_clean.evt
Size (bytes)497,471,040126,040,320
Size474.4 MB 120.2 MB
Events in quadrant A3,149,138853,758
Events in quadrant B3,477,858866,404
Events in quadrant C4,134,474836,501
Events in quadrant D3,876,897821,100

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136223
B0145722
C0164892
D0156242

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6301881.396604%
B63011081.714014%
C63012864.538962%
D63011502.380575%

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 7502 6303 38 38 0.51% 0.60%
B 7502 6303 27 27 0.36% 0.43%
C 7502 6303 53 53 0.71% 0.84%
D 7502 6303 73 73 0.97% 1.16%

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 15 174 192888 1254.86 763 749 153.1
A 13 248 18943 118.83 763 749 153.1
A 0 226 6752 39.21 763 749 153.1
B 15 35 122605 855.25 768 748 142.5
B 0 189 98514 686.17 768 748 142.5
B 0 197 61790 428.42 768 748 142.5
C 3 233 935368 5460.07 744 747 171.2
C 14 238 116040 673.54 744 747 171.2
C 0 207 94717 548.97 744 747 171.2
D 1 52 685048 3774.46 752 731 181.3
D 10 70 192779 1059.27 752 731 181.3
D 7 38 68947 376.26 752 731 181.3

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