ASTROSAT CZTI

Data Quality Report

Orbit 38836

Creation date: 2024-06-27T21:57:03.272353
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/AS1A12_077T06_9000005408_38836cztM0_level2.fits modeM0/AS1A12_077T06_9000005408_38836cztM0_level2_quad_clean.evt
Size (bytes)350,948,16092,643,840
Size334.7 MB 88.4 MB
Events in quadrant A2,880,990645,602
Events in quadrant B2,610,782658,186
Events in quadrant C2,794,646625,963
Events in quadrant D4,301,273513,325

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118613
B0112002
C0115132
D0163192

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5177210.405640%
B5177220.424957%
C5177420.811281%
D517759211.435194%

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 7031 5178 13 13 0.18% 0.25%
B 7031 5178 10 10 0.14% 0.19%
C 7031 5178 33 33 0.47% 0.64%
D 7031 5178 462 462 6.57% 8.92%

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 10 83 407130 3294.96 609 598 123.4
A 13 248 75577 607.71 609 598 123.4
A 9 143 29228 232.05 609 598 123.4
B 15 85 66731 568.98 610 594 116.2
B 5 184 50063 425.59 610 594 116.2
B 4 81 32165 271.61 610 594 116.2
C 15 214 214072 1536.97 601 605 138.9
C 14 254 98113 702.06 601 605 138.9
C 3 233 77343 552.51 601 605 138.9
D 2 249 1265513 9323.53 558 543 135.7
D 12 235 496048 3652.15 558 543 135.7
D 12 227 181036 1330.33 558 543 135.7

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