ASTROSAT CZTI

Data Quality Report

Orbit 41097

Creation date: 2024-06-27T22:24:24.123659
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_032T01_9000005598_41097cztM0_level2.fits modeM0/AS1A12_032T01_9000005598_41097cztM0_level2_quad_clean.evt
Size (bytes)329,016,96097,079,040
Size313.8 MB 92.6 MB
Events in quadrant A3,091,153671,182
Events in quadrant B3,027,284675,473
Events in quadrant C2,732,776638,750
Events in quadrant D2,922,477589,315

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122083
B0119842
C0108912
D0118442

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5207110.211254%
B5207961.843672%
C5207160.307279%
D5208721.382488%

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 7239 5208 4 4 0.06% 0.08%
B 7239 5208 68 68 0.94% 1.31%
C 7239 5208 10 10 0.14% 0.19%
D 7240 5209 50 50 0.69% 0.96%

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 514807 3886.44 650 639 132.3
A 2 79 40144 298.61 650 639 132.3
A 14 235 16948 123.27 650 639 132.3
B 0 245 382071 3113.41 638 621 122.5
B 0 186 111223 902.74 638 621 122.5
B 5 255 24226 192.67 638 621 122.5
C 15 214 222551 1542.44 621 626 143.9
C 0 10 77151 531.87 621 626 143.9
C 14 254 8029 51.45 621 626 143.9
D 13 249 219559 1432.01 625 607 152.9
D 2 249 152170 991.27 625 607 152.9
D 1 52 89976 584.5 625 607 152.9

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