ASTROSAT CZTI

Data Quality Report

Orbit 22883

Creation date: 2024-06-27T18:47:02.120141
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/AS1A08_009T01_9000003382_22883cztM0_level2.evt modeM0/AS1A08_009T01_9000003382_22883cztM0_level2_quad_clean.evt
Size (bytes)512,110,080108,190,080
Size488.4 MB 103.2 MB
Events in quadrant A3,054,094737,825
Events in quadrant B3,170,343760,137
Events in quadrant C3,078,394710,453
Events in quadrant D5,780,700630,195

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130192
B0134042
C0131682
D0215453

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6272180.286990%
B6272370.589923%
C6272610.972577%
D627176512.199011%

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 7542 6273 0 0 0.00% 0.00%
B 7542 6273 3 3 0.04% 0.05%
C 7542 6273 0 0 0.00% 0.00%
D 7541 6272 707 707 9.38% 11.27%

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 13 254 9898 58.49 790 777 155.9
A 0 226 7068 40.34 790 777 155.9
A 3 137 6279 35.28 790 777 155.9
B 0 190 36869 247.89 790 774 145.6
B 12 111 17378 114.03 790 774 145.6
B 11 111 15086 98.29 790 774 145.6
C 14 238 121702 705.91 750 755 171.3
C 7 247 19088 107.0 750 755 171.3
C 0 10 14324 79.2 750 755 171.3
D 1 52 1885931 10984.22 711 692 171.6
D 7 238 932363 5428.32 711 692 171.6
D 13 153 100788 583.2 711 692 171.6

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