ASTROSAT CZTI

Data Quality Report

Orbit 41799

Creation date: 2024-06-27T22:32:57.703182
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_052T04_9000005700_41799cztM0_level2.fits modeM0/AS1A12_052T04_9000005700_41799cztM0_level2_quad_clean.evt
Size (bytes)352,376,64096,995,520
Size336.1 MB 92.5 MB
Events in quadrant A3,358,760652,774
Events in quadrant B2,736,444663,076
Events in quadrant C3,465,813613,966
Events in quadrant D3,014,857587,637

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01210
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137942
B0124842
C0139749
D0134295

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6008240.399467%
B6008290.482690%
C60072333.878808%
D6006891.481851%

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 7321 6009 17 17 0.23% 0.28%
B 7320 6007 19 19 0.26% 0.32%
C 7320 6007 228 228 3.11% 3.80%
D 7320 6006 86 86 1.17% 1.43%

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 587758 4371.82 651 638 134.3
A 15 223 168952 1253.3 651 638 134.3
A 12 189 68134 502.59 651 638 134.3
B 5 255 93456 736.5 648 631 126.0
B 15 35 25416 196.65 648 631 126.0
B 0 183 23174 178.86 648 631 126.0
C 0 10 795842 5454.36 622 626 145.8
C 15 214 238039 1628.41 622 626 145.8
C 13 61 4173 24.33 622 626 145.8
D 13 249 323600 2086.27 634 618 154.8
D 10 199 79815 511.57 634 618 154.8
D 12 6 64650 413.61 634 618 154.8

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