ASTROSAT CZTI

Data Quality Report

Orbit 15200

Creation date: 2024-06-27T17:05:11.909317
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/AS1T02_069T01_9000002242_15200cztM0_level2.evt modeM0/AS1T02_069T01_9000002242_15200cztM0_level2_quad_clean.evt
Size (bytes)501,215,04080,464,320
Size478.0 MB 76.7 MB
Events in quadrant A3,147,157507,964
Events in quadrant B4,437,008499,124
Events in quadrant C3,503,211499,170
Events in quadrant D3,649,946475,919

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134633
B0174112
C0145362
D0150582

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6507200.307361%
B65073475.332719%
C6507150.230521%
D65071261.936376%

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 7578 6500 0 0 0.00% 0.00%
B 7578 6500 212 212 2.80% 3.26%
C 7578 6500 0 0 0.00% 0.00%
D 7578 6500 117 117 1.54% 1.80%

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 12 189 66877 411.25 798 780 160.7
A 0 226 7027 38.87 798 780 160.7
A 15 239 6462 35.35 798 780 160.7
B 3 112 1165322 7739.88 790 771 150.5
B 4 173 46281 302.47 790 771 150.5
B 0 229 25464 164.11 790 771 150.5
C 3 233 385186 2147.62 774 779 179.0
C 7 247 99243 550.1 774 779 179.0
C 13 61 5628 27.09 774 779 179.0
D 13 104 184585 983.95 763 741 186.8
D 2 33 137638 732.69 763 741 186.8
D 1 255 127006 675.78 763 741 186.8

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