ASTROSAT CZTI

Data Quality Report

Orbit 26535

Creation date: 2024-06-27T19:30:11.502853
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/AS1A09_095T02_9000003840_26535cztM0_level2.evt modeM0/AS1A09_095T02_9000003840_26535cztM0_level2_quad_clean.evt
Size (bytes)601,070,400109,437,120
Size573.2 MB 104.4 MB
Events in quadrant A3,852,722724,887
Events in quadrant B3,546,574742,289
Events in quadrant C4,115,849696,994
Events in quadrant D6,229,487677,620

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156110
B0146700
C0163590
D0232140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67761712.523613%
B6776841.239669%
C67763024.456907%
D67754997.365314%

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 7681 6777 120 120 1.56% 1.77%
B 7681 6777 13 13 0.17% 0.19%
C 7681 6777 209 209 2.72% 3.08%
D 7680 6776 460 460 5.99% 6.79%

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 9 130 387531 2340.01 827 811 165.3
A 0 13 170187 1024.88 827 811 165.3
A 5 168 99868 599.39 827 811 165.3
B 3 112 208403 1358.51 829 811 152.8
B 0 229 27700 175.97 829 811 152.8
B 5 172 26314 166.9 829 811 152.8
C 15 127 753264 4157.77 788 796 181.0
C 14 238 127132 698.07 788 796 181.0
C 3 233 98604 540.44 788 796 181.0
D 1 52 1699665 9114.33 785 767 186.4
D 7 80 1116666 5986.63 785 767 186.4
D 13 104 342451 1833.08 785 767 186.4

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