ASTROSAT CZTI

Data Quality Report

Orbit 29885

Creation date: 2024-06-27T20:08:44.402857
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/AS1A10_102T12_9000004284_29885cztM0_level2.evt modeM0/AS1A10_102T12_9000004284_29885cztM0_level2_quad_clean.evt
Size (bytes)545,699,52084,559,680
Size520.4 MB 80.6 MB
Events in quadrant A3,386,669534,783
Events in quadrant B5,002,400536,132
Events in quadrant C4,205,421521,175
Events in quadrant D3,492,104515,575

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140681
B0196211
C0169731
D0144481

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64871942.990597%
B64881021.572133%
C64881221.880395%
D6488390.601110%

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 7307 6488 124 124 1.70% 1.91%
B 7308 6489 7 7 0.10% 0.11%
C 7308 6489 3 3 0.04% 0.05%
D 7308 6489 4 4 0.05% 0.06%

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 15 174 321449 2013.95 790 774 159.2
A 8 192 16713 100.1 790 774 159.2
A 13 254 11525 67.52 790 774 159.2
B 6 159 1816028 11976.31 782 763 151.6
B 0 229 100236 656.28 782 763 151.6
B 12 111 19228 121.82 782 763 151.6
C 3 233 1073718 6051.31 757 762 177.3
C 14 238 123911 694.54 757 762 177.3
C 10 22 42621 236.08 757 762 177.3
D 8 195 451890 2450.85 770 750 184.1
D 7 238 60595 325.11 770 750 184.1
D 2 250 27089 143.09 770 750 184.1

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