ASTROSAT CZTI

Data Quality Report

Orbit 14721

Creation date: 2024-06-27T16:58:54.123913
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/AS1A04_048T01_9000002176_14721cztM0_level2.evt modeM0/AS1A04_048T01_9000002176_14721cztM0_level2_quad_clean.evt
Size (bytes)501,635,520102,015,360
Size478.4 MB 97.3 MB
Events in quadrant A3,372,698687,027
Events in quadrant B3,520,861677,410
Events in quadrant C3,948,718646,869
Events in quadrant D3,910,530626,662

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141253
B0146392
C0160262
D0160052

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6471801.236285%
B64711101.699892%
C6471600.927214%
D64713154.867872%

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 7777 6472 2 2 0.03% 0.03%
B 7777 6473 25 25 0.32% 0.39%
C 7777 6473 16 16 0.21% 0.25%
D 7776 6471 289 289 3.72% 4.47%

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 8 15 73143 428.3 838 821 168.9
A 12 189 49483 288.18 838 821 168.9
A 3 1 9530 51.58 838 821 168.9
B 0 228 128302 815.27 824 805 156.4
B 4 142 73006 461.68 824 805 156.4
B 0 205 32037 199.71 824 805 156.4
C 3 233 725578 4043.71 783 788 179.2
C 0 207 152787 848.02 783 788 179.2
C 6 96 12296 64.2 783 788 179.2
D 15 0 690277 3725.55 780 762 185.1
D 13 61 69207 369.82 780 762 185.1
D 10 199 38629 204.6 780 762 185.1

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