ASTROSAT CZTI

Data Quality Report

Orbit 42487

Creation date: 2024-06-27T22:40:44.770776
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/AS1C07_001T10_9000005806_42487cztM0_level2.fits modeM0/AS1C07_001T10_9000005806_42487cztM0_level2_quad_clean.evt
Size (bytes)318,081,60086,008,320
Size303.3 MB 82.0 MB
Events in quadrant A2,790,339587,290
Events in quadrant B3,330,311565,833
Events in quadrant C2,411,027569,820
Events in quadrant D2,842,952521,889

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112772
B0134903
C0104282
D0121162

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A512780.156037%
B51273426.670568%
C5127100.195046%
D51271232.399064%

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 7040 5128 1 1 0.01% 0.02%
B 7040 5128 228 228 3.24% 4.45%
C 7040 5128 6 6 0.09% 0.12%
D 7040 5128 95 95 1.35% 1.85%

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 523490 4542.96 566 556 115.1
A 12 189 60458 520.39 566 556 115.1
A 13 6 15823 132.63 566 556 115.1
B 5 255 1086779 10408.07 545 530 104.4
B 0 229 38417 363.02 545 530 104.4
B 5 172 26934 252.99 545 530 104.4
C 15 214 218983 1728.14 543 545 126.4
C 14 254 52602 411.84 543 545 126.4
C 9 54 7463 54.73 543 545 126.4
D 2 249 174519 1325.5 542 528 131.3
D 12 6 161658 1227.52 542 528 131.3
D 1 47 68191 515.47 542 528 131.3

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