ASTROSAT CZTI

Data Quality Report

Orbit 37718

Creation date: 2024-06-27T21:43:34.642746
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_106T02_9000005344_37718cztM0_level2.evt modeM0/AS1A11_106T02_9000005344_37718cztM0_level2_quad_clean.evt
Size (bytes)486,198,72072,483,840
Size463.7 MB 69.1 MB
Events in quadrant A5,178,922445,122
Events in quadrant B2,899,775459,344
Events in quadrant C2,704,016462,533
Events in quadrant D3,562,391436,324

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191483
B0123652
C0115312
D0144412

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55943836.846621%
B5594550.983196%
C5594140.250268%
D55941382.466929%

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 7207 5595 329 329 4.57% 5.88%
B 7206 5593 38 38 0.53% 0.68%
C 7206 5593 9 9 0.12% 0.16%
D 7206 5593 137 137 1.90% 2.45%

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 15 222 2395872 19445.66 614 604 123.2
A 10 83 338347 2741.92 614 604 123.2
A 9 143 25008 198.12 614 604 123.2
B 5 172 138483 1157.78 617 602 119.1
B 5 255 124881 1043.57 617 602 119.1
B 0 189 101131 844.14 617 602 119.1
C 15 214 257309 1821.0 604 607 141.0
C 0 10 79529 559.86 604 607 141.0
C 14 254 8623 56.86 604 607 141.0
D 2 249 317723 2157.7 602 583 147.0
D 2 250 233826 1586.89 602 583 147.0
D 12 227 169841 1151.56 602 583 147.0

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