ASTROSAT CZTI

Data Quality Report

Orbit 12451

Creation date: 2024-06-27T16:27:34.987905
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_174T01_9000001850_12451cztM0_level2.evt modeM0/AS1A04_174T01_9000001850_12451cztM0_level2_quad_clean.evt
Size (bytes)577,944,00083,162,880
Size551.2 MB 79.3 MB
Events in quadrant A5,885,074503,542
Events in quadrant B4,172,175506,539
Events in quadrant C3,397,499517,360
Events in quadrant D3,561,472490,612

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0225532
B0168631
C0148391
D0155021

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71892593.602726%
B71893594.993740%
C71891301.808318%
D71891712.378634%

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 7555 7190 29 29 0.38% 0.40%
B 7555 7190 134 134 1.77% 1.86%
C 7555 7190 0 0 0.00% 0.00%
D 7555 7191 32 32 0.42% 0.45%

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 13 251 1008012 5593.74 876 857 180.1
A 0 23 944507 5241.03 876 857 180.1
A 1 162 182523 1008.97 876 857 180.1
B 4 239 540066 3156.86 880 857 170.8
B 0 187 69343 400.96 880 857 170.8
B 11 51 53524 308.34 880 857 170.8
C 13 61 6390 27.16 871 876 203.0
C 8 222 2838 9.66 871 876 203.0
C 3 202 2159 6.32 871 876 203.0
D 8 195 123739 599.17 855 833 205.1
D 10 199 54957 263.85 855 833 205.1
D 7 71 49691 238.18 855 833 205.1

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