ASTROSAT CZTI

Data Quality Report

Orbit 36496

Creation date: 2022-06-29T00:32:17.631541
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_049T05_9000005212_36496cztM0_level2.evt modeM0/AS1A11_049T05_9000005212_36496cztM0_level2_quad_clean.evt
Size (bytes)412,407,36067,340,160
Size393.3 MB 64.2 MB
Events in quadrant A2,643,553429,875
Events in quadrant B2,944,671420,564
Events in quadrant C2,937,634407,430
Events in quadrant D3,590,572396,757

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114313
B0123592
C0122512
D0145102

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A549180.145693%
B5491480.874158%
C54911081.966855%
D54911522.768166%

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 7164 5492 2 2 0.03% 0.04%
B 7164 5492 24 24 0.34% 0.44%
C 7164 5492 78 78 1.09% 1.42%
D 7164 5492 177 177 2.47% 3.22%

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 209677 1647.65 624 613 126.9
A 13 254 9639 71.13 624 613 126.9
A 9 143 7885 57.31 624 613 126.9
B 5 172 154938 1294.48 615 600 119.2
B 0 229 105785 882.22 615 600 119.2
B 5 255 100033 833.97 615 600 119.2
C 0 10 334770 2439.43 591 593 137.0
C 15 214 234380 1706.6 591 593 137.0
C 0 207 39746 285.81 591 593 137.0
D 12 227 688631 4704.13 595 577 146.3
D 12 235 169897 1157.62 595 577 146.3
D 13 249 139971 953.02 595 577 146.3

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