ASTROSAT CZTI

Data Quality Report

Orbit 14911

Creation date: 2024-06-27T17:01:14.503859
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_099T01_9000002204_14911cztM0_level2.evt modeM0/AS1A04_099T01_9000002204_14911cztM0_level2_quad_clean.evt
Size (bytes)526,501,44089,948,160
Size502.1 MB 85.8 MB
Events in quadrant A3,638,387571,212
Events in quadrant B3,977,914572,108
Events in quadrant C3,704,115552,313
Events in quadrant D4,140,646531,607

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151663
B0161092
C0152682
D0169752

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71312403.365587%
B71314165.833684%
C71311872.622353%
D71313695.174590%

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 9097 7133 0 0 0.00% 0.00%
B 9097 7133 109 109 1.20% 1.53%
C 9097 7134 0 0 0.00% 0.00%
D 9097 7133 155 155 1.70% 2.17%

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 3 1 10114 48.77 940 920 188.5
A 4 2 9988 48.1 940 920 188.5
A 0 226 8164 38.43 940 920 188.5
B 10 16 322246 1793.16 925 904 179.2
B 0 229 36839 200.53 925 904 179.2
B 12 111 22110 118.33 925 904 179.2
C 3 233 147844 698.35 906 912 210.4
C 0 207 21613 98.39 906 912 210.4
C 13 61 6423 26.19 906 912 210.4
D 7 223 539506 2499.24 901 879 215.5
D 10 70 88362 405.92 901 879 215.5
D 13 249 50846 231.85 901 879 215.5

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