ASTROSAT CZTI

Data Quality Report

Orbit 40828

Creation date: 2024-06-27T22:21:03.442250
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_104T02_9000005572_40828cztM0_level2.fits modeM0/AS1A12_104T02_9000005572_40828cztM0_level2_quad_clean.evt
Size (bytes)338,734,08098,536,320
Size323.0 MB 94.0 MB
Events in quadrant A3,295,448655,032
Events in quadrant B2,724,181675,754
Events in quadrant C3,014,309640,882
Events in quadrant D3,029,081585,525

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133422
B0123051
C0127381
D0133141

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6107410.671361%
B610750.081873%
C6107510.835107%
D6107671.097102%

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 8790 6109 25 25 0.28% 0.41%
B 8790 6109 1 1 0.01% 0.02%
C 8790 6109 40 40 0.46% 0.65%
D 8790 6109 41 41 0.47% 0.67%

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 542832 3888.61 673 659 139.4
A 13 248 124623 889.1 673 659 139.4
A 13 6 13474 91.91 673 659 139.4
B 0 230 37877 282.73 670 651 131.7
B 0 190 31200 232.02 670 651 131.7
B 12 111 16825 122.84 670 651 131.7
C 15 214 261259 1691.67 656 660 154.0
C 0 10 129725 837.82 656 660 154.0
C 14 254 42991 274.79 656 660 154.0
D 2 249 224821 1381.63 654 634 162.3
D 13 249 101260 620.14 654 634 162.3
D 1 47 64045 390.79 654 634 162.3

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