ASTROSAT CZTI

Data Quality Report

Orbit 40658

Creation date: 2024-06-27T22:18:48.047133
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_029T01_9000005556_40658cztM0_level2.fits modeM0/AS1A12_029T01_9000005556_40658cztM0_level2_quad_clean.evt
Size (bytes)417,625,92086,927,040
Size398.3 MB 82.9 MB
Events in quadrant A2,860,058609,540
Events in quadrant B3,142,366624,535
Events in quadrant C2,723,791604,112
Events in quadrant D6,295,970401,484

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121133
B0131862
C0116742
D0226122

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5607130.231853%
B5607941.676476%
C5607200.356697%
D5607167829.926877%

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 8683 5609 8 8 0.09% 0.14%
B 8683 5609 50 50 0.58% 0.89%
C 8683 5609 17 17 0.20% 0.30%
D 8683 5609 1352 1352 15.57% 24.10%

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 484076 3827.09 608 595 126.3
A 15 191 14414 109.39 608 595 126.3
A 9 191 8989 66.44 608 595 126.3
B 0 229 390300 3305.74 603 586 117.9
B 0 190 314567 2663.34 603 586 117.9
B 4 171 29227 242.95 603 586 117.9
C 15 214 246470 1738.68 600 603 141.4
C 14 254 77396 543.05 600 603 141.4
C 12 249 32324 224.32 600 603 141.4
D 12 227 4019335 32840.28 486 472 122.4
D 12 191 118077 961.01 486 472 122.4
D 2 250 92005 747.97 486 472 122.4

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