ASTROSAT CZTI

Data Quality Report

Orbit 08231

Creation date: 2024-06-27T15:29:48.260144
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/AS1G07_070T01_9000001138_08231cztM0_level2.evt modeM0/AS1G07_070T01_9000001138_08231cztM0_level2_quad_clean.evt
Size (bytes)475,557,12062,657,280
Size453.5 MB 59.8 MB
Events in quadrant A3,273,703363,767
Events in quadrant B3,298,914368,439
Events in quadrant C3,295,592363,432
Events in quadrant D4,088,778344,107

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141223
B0139572
C0145032
D0166542

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65601141.737805%
B6560671.021341%
C6560630.960366%
D65602163.292683%

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 7594 6560 42 42 0.55% 0.64%
B 7595 6560 2 2 0.03% 0.03%
C 7595 6560 0 0 0.00% 0.00%
D 7595 6561 164 164 2.16% 2.50%

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 5 16 238263 1471.85 785 768 161.4
A 0 226 7422 41.24 785 768 161.4
A 12 194 6911 38.07 785 768 161.4
B 4 81 69613 454.2 795 776 151.6
B 0 214 54397 353.8 795 776 151.6
B 11 51 51568 335.14 795 776 151.6
C 9 68 227622 1264.86 766 769 179.4
C 1 16 68669 378.59 766 769 179.4
C 13 61 5741 27.72 766 769 179.4
D 1 52 687084 3702.89 757 732 185.4
D 13 105 369345 1988.68 757 732 185.4
D 12 233 66706 355.93 757 732 185.4

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