ASTROSAT CZTI

Data Quality Report

Orbit 36581

Creation date: 2024-06-27T21:28:43.410919
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_097T17_9000005222_36581cztM0_level2.evt modeM0/AS1A11_097T17_9000005222_36581cztM0_level2_quad_clean.evt
Size (bytes)433,869,12098,599,680
Size413.8 MB 94.0 MB
Events in quadrant A2,783,716675,779
Events in quadrant B2,875,400678,739
Events in quadrant C3,647,723644,110
Events in quadrant D3,477,655620,938

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113893
B0117012
C0138802
D0135932

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5227160.306103%
B5227330.631337%
C52272865.471590%
D52271452.774058%

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 7350 5228 5 5 0.07% 0.10%
B 7350 5228 11 11 0.15% 0.21%
C 7350 5228 234 234 3.18% 4.48%
D 7350 5228 115 115 1.56% 2.20%

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 202889 1560.58 649 638 129.6
A 15 223 62016 473.6 649 638 129.6
A 13 254 8971 64.3 649 638 129.6
B 0 213 169136 1394.45 639 625 120.8
B 0 190 56377 461.35 639 625 120.8
B 5 255 28388 229.74 639 625 120.8
C 0 10 530685 3828.95 604 610 138.4
C 14 254 441456 3184.41 604 610 138.4
C 15 214 219415 1580.52 604 610 138.4
D 12 227 203847 1341.13 625 609 151.5
D 2 153 142508 936.36 625 609 151.5
D 12 235 139114 913.97 625 609 151.5

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