ASTROSAT CZTI

Data Quality Report

Orbit 41252

Creation date: 2024-06-27T22:26:33.498052
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_41252cztM0_level2.fits modeM0/AS1A12_052T04_9000005638_41252cztM0_level2_quad_clean.evt
Size (bytes)425,914,56098,876,160
Size406.2 MB 94.3 MB
Events in quadrant A3,526,662673,564
Events in quadrant B2,778,529683,361
Events in quadrant C3,877,873638,085
Events in quadrant D5,107,410571,931

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142623
B0126962
C0156122
D0194542

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6116190.310661%
B6116180.294310%
C61161752.861347%
D61165008.175278%

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 9223 6118 5 5 0.05% 0.08%
B 9223 6118 7 7 0.08% 0.11%
C 9223 6118 156 156 1.69% 2.55%
D 9223 6118 471 471 5.11% 7.70%

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 548207 3987.95 672 659 137.3
A 0 8 339808 2470.12 672 659 137.3
A 13 248 19743 138.99 672 659 137.3
B 0 186 122606 933.23 664 644 130.7
B 0 245 20966 155.5 664 644 130.7
B 5 255 18007 132.86 664 644 130.7
C 9 54 662056 4328.05 650 654 152.8
C 0 10 333482 2177.94 650 654 152.8
C 15 214 258258 1685.7 650 654 152.8
D 1 52 2057047 13121.68 639 620 156.7
D 13 249 319856 2036.99 639 620 156.7
D 12 16 105622 670.0 639 620 156.7

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