ASTROSAT CZTI

Data Quality Report

Orbit 27737

Creation date: 2024-06-27T19:43:42.362824
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/AS1T03_263T01_9000003990_27737cztM0_level2.evt modeM0/AS1T03_263T01_9000003990_27737cztM0_level2_quad_clean.evt
Size (bytes)433,520,640102,084,480
Size413.4 MB 97.4 MB
Events in quadrant A3,060,835688,587
Events in quadrant B3,226,681698,005
Events in quadrant C3,239,310669,587
Events in quadrant D3,211,346633,347

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124490
B0130640
C0131000
D0132510

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5756861.494093%
B57571502.605524%
C57571492.588154%
D5757821.424353%

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 6376 5756 1 1 0.02% 0.02%
B 6377 5757 30 30 0.47% 0.52%
C 6377 5757 1 1 0.02% 0.02%
D 6377 5757 28 28 0.44% 0.49%

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 0 13 26292 146.75 784 771 173.9
A 13 254 9477 50.06 784 771 173.9
A 6 16 7338 37.76 784 771 173.9
B 3 64 153778 934.71 778 763 163.7
B 4 200 16954 98.9 778 763 163.7
B 12 111 16862 98.34 778 763 163.7
C 3 233 175752 916.74 753 760 190.9
C 14 238 122308 636.76 753 760 190.9
C 10 22 11051 53.91 753 760 190.9
D 1 52 236650 1196.12 752 731 197.2
D 11 176 74267 372.83 752 731 197.2
D 2 250 52436 262.15 752 731 197.2

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