ASTROSAT CZTI

Data Quality Report

Orbit 37345

Creation date: 2024-06-27T21:38:47.311967
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_014T01_9000005314_37345cztM0_level2.evt modeM0/AS1C07_014T01_9000005314_37345cztM0_level2_quad_clean.evt
Size (bytes)577,275,84091,267,200
Size550.5 MB 87.0 MB
Events in quadrant A2,885,564620,678
Events in quadrant B3,416,557628,252
Events in quadrant C3,255,937618,081
Events in quadrant D7,577,079536,200

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116323
B0133732
C0127812
D0261182

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5141380.739156%
B51412675.193542%
C51411122.178564%
D5141113222.019062%

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 7055 5142 28 28 0.40% 0.54%
B 7055 5142 192 192 2.72% 3.73%
C 7055 5142 82 82 1.16% 1.59%
D 7055 5142 1104 1104 15.65% 21.47%

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 10 83 256630 2019.01 624 615 126.8
A 15 237 159804 1255.41 624 615 126.8
A 13 248 22292 170.95 624 615 126.8
B 4 171 358740 3040.12 620 609 117.8
B 5 172 265666 2250.03 620 609 117.8
B 0 190 199299 1686.65 620 609 117.8
C 1 23 304299 2139.03 609 617 142.0
C 14 254 289512 2034.88 609 617 142.0
C 15 214 215850 1516.03 609 617 142.0
D 12 235 3942644 28257.14 558 545 139.5
D 2 249 1024953 7343.0 558 545 139.5
D 13 249 228133 1631.36 558 545 139.5

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