ASTROSAT CZTI

Data Quality Report

Orbit 41260

Creation date: 2024-06-27T22:26:40.464121
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/AS1A12_052T04_9000005638_41260cztM0_level2.fits modeM0/AS1A12_052T04_9000005638_41260cztM0_level2_quad_clean.evt
Size (bytes)359,714,88086,852,160
Size343.1 MB 82.8 MB
Events in quadrant A2,906,264590,238
Events in quadrant B3,382,873579,269
Events in quadrant C2,856,437571,608
Events in quadrant D3,753,541514,972

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117623
B0138422
C0118802
D0147662

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5342140.262074%
B53423115.821790%
C53421402.620741%
D53423396.345938%

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 7285 5343 7 7 0.10% 0.13%
B 7285 5343 249 249 3.42% 4.66%
C 7285 5343 137 137 1.88% 2.56%
D 7285 5343 326 326 4.47% 6.10%

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 522899 4344.81 584 571 120.2
A 12 189 68407 564.27 584 571 120.2
A 6 10 29163 237.83 584 571 120.2
B 0 186 1071275 9605.83 572 555 111.5
B 0 245 42099 372.71 572 555 111.5
B 12 111 13785 118.69 572 555 111.5
C 0 10 394342 2993.62 564 567 131.5
C 15 214 228479 1732.67 564 567 131.5
C 9 54 32742 244.6 564 567 131.5
D 1 52 976331 7137.53 556 541 136.7
D 13 249 301151 2198.85 556 541 136.7
D 5 222 188386 1374.01 556 541 136.7

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