ASTROSAT CZTI

Data Quality Report

Orbit 11878

Creation date: 2024-06-27T16:19:30.763002
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/AS1T01_209T01_9000001758_11878cztM0_level2.evt modeM0/AS1T01_209T01_9000001758_11878cztM0_level2_quad_clean.evt
Size (bytes)425,275,20091,002,240
Size405.6 MB 86.8 MB
Events in quadrant A2,840,686602,187
Events in quadrant B4,144,547584,844
Events in quadrant C2,535,454590,532
Events in quadrant D2,960,141568,545

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124402
B0161771
C0119041
D0128351

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5865390.664962%
B58653405.797101%
C5865150.255754%
D5865440.750213%

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 6846 5867 3 3 0.04% 0.05%
B 6846 5867 189 189 2.76% 3.22%
C 6846 5867 9 9 0.13% 0.15%
D 6846 5867 36 36 0.53% 0.61%

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 1 162 86440 628.67 668 655 136.5
A 1 178 40854 294.59 668 655 136.5
A 1 161 36883 265.49 668 655 136.5
B 4 239 1018096 8146.37 658 642 124.9
B 15 185 219748 1754.3 658 642 124.9
B 15 204 158486 1263.8 658 642 124.9
C 0 207 34893 229.71 639 640 149.1
C 1 16 7107 43.37 639 640 149.1
C 13 61 4838 28.15 639 640 149.1
D 1 52 187056 1210.27 637 619 154.0
D 8 195 149936 969.31 637 619 154.0
D 13 249 54514 349.86 637 619 154.0

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