ASTROSAT CZTI

Data Quality Report

Orbit 30986

Creation date: 2024-06-27T20:21:56.582310
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_071T42_9000004476_30986cztM0_level2.evt modeM0/AS1A10_071T42_9000004476_30986cztM0_level2_quad_clean.evt
Size (bytes)529,776,00087,549,120
Size505.2 MB 83.5 MB
Events in quadrant A2,954,575582,433
Events in quadrant B5,612,130545,266
Events in quadrant C3,417,071550,808
Events in quadrant D3,641,585541,148

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128351
B0210951
C0140011
D0147811

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6186570.921435%
B61864757.678629%
C61861732.796638%
D61861712.764306%

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 7161 6186 0 0 0.00% 0.00%
B 7161 6186 335 335 4.68% 5.42%
C 7161 6186 41 41 0.57% 0.66%
D 7161 6186 127 127 1.77% 2.05%

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 13 254 12548 76.78 765 750 153.7
A 3 137 7523 44.08 765 750 153.7
A 0 226 6434 36.99 765 750 153.7
B 6 159 1722655 12216.67 728 708 141.0
B 5 172 853273 6048.68 728 708 141.0
B 0 190 69184 485.82 728 708 141.0
C 0 10 419336 2440.33 726 731 171.5
C 14 238 117303 679.58 726 731 171.5
C 14 67 21483 120.98 726 731 171.5
D 13 249 380343 2189.12 736 717 173.4
D 8 195 308033 1772.14 736 717 173.4
D 2 250 50855 289.12 736 717 173.4

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