ASTROSAT CZTI

Data Quality Report

Orbit 36376

Creation date: 2022-06-20T21:41:57.275347
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/AS1A11_097T24_9000005196_36376cztM0_level2.evt modeM0/AS1A11_097T24_9000005196_36376cztM0_level2_quad_clean.evt
Size (bytes)422,072,64061,683,840
Size402.5 MB 58.8 MB
Events in quadrant A2,836,355394,832
Events in quadrant B3,184,444388,979
Events in quadrant C2,992,481378,008
Events in quadrant D3,431,184356,337

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115723
B0126812
C0118402
D0134052

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4980230.461847%
B4980661.325301%
C4980951.907631%
D49801382.771084%

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 7013 4981 8 8 0.11% 0.16%
B 7013 4981 51 51 0.73% 1.02%
C 7013 4981 77 77 1.10% 1.55%
D 7013 4981 128 128 1.83% 2.57%

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 179622 1362.9 657 647 131.3
A 15 223 91507 691.9 657 647 131.3
A 9 143 13460 97.57 657 647 131.3
B 5 172 411756 3394.36 647 632 121.1
B 5 255 124158 1019.86 647 632 121.1
B 0 189 69836 571.37 647 632 121.1
C 0 10 228042 1574.98 629 634 144.4
C 15 214 214354 1480.18 629 634 144.4
C 0 207 88841 610.9 629 634 144.4
D 12 6 260449 1721.78 628 612 150.9
D 13 249 221461 1463.43 628 612 150.9
D 2 250 166911 1101.96 628 612 150.9

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