ASTROSAT CZTI

Data Quality Report

Orbit 15951

Creation date: 2024-06-27T17:15:36.200121
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/AS1G08_081T01_9000002350_15951cztM0_level2.evt modeM0/AS1G08_081T01_9000002350_15951cztM0_level2_quad_clean.evt
Size (bytes)436,098,24097,516,800
Size415.9 MB 93.0 MB
Events in quadrant A3,085,229640,148
Events in quadrant B3,417,001651,090
Events in quadrant C3,189,751625,734
Events in quadrant D3,098,800608,490

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131133
B0140412
C0132782
D0133482

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6130410.668842%
B6130731.190865%
C6130751.223491%
D6130420.685155%

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 7511 6132 0 0 0.00% 0.00%
B 7511 6132 15 15 0.20% 0.24%
C 7511 6132 0 0 0.00% 0.00%
D 7511 6132 13 13 0.17% 0.21%

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 15 239 8752 50.29 795 781 158.5
A 13 210 8511 48.77 795 781 158.5
A 0 226 7000 39.24 795 781 158.5
B 5 65 164978 1113.12 795 776 147.5
B 0 189 28919 190.78 795 776 147.5
B 4 216 27592 181.78 795 776 147.5
C 14 238 118348 654.09 774 782 179.7
C 3 233 45824 250.59 774 782 179.7
C 0 207 8862 44.95 774 782 179.7
D 4 239 54296 286.04 777 756 187.2
D 10 70 38790 203.2 777 756 187.2
D 2 234 32708 170.7 777 756 187.2

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