ASTROSAT CZTI

Data Quality Report

Orbit 16191

Creation date: 2024-06-27T17:19:08.993425
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_109T01_9000002386_16191cztM0_level2.evt modeM0/AS1T02_109T01_9000002386_16191cztM0_level2_quad_clean.evt
Size (bytes)171,927,36022,176,000
Size164.0 MB 21.1 MB
Events in quadrant A1,252,259123,400
Events in quadrant B1,286,163126,519
Events in quadrant C1,264,465115,154
Events in quadrant D1,221,787117,271

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144979126
B0146409178
C0147039344
D0146909255

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014496
B014597
C014389
D014597

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A061
B083
C073
D071

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A263690.341426%
B2633110.417774%
C2618240.916730%
D2645100.378072%

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 6581 3460 0 0 0.00% 0.00%
B 6586 3454 0 0 0.00% 0.00%
C 6534 3452 0 0 0.00% 0.00%
D 6580 3477 2 2 0.03% 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 8 247 10565 154.14 321 314 66.5
A 15 174 3466 47.4 321 314 66.5
A 0 226 2755 36.7 321 314 66.5
B 3 209 15155 235.26 318 310 63.1
B 4 216 9060 138.67 318 310 63.1
B 3 64 8934 136.67 318 310 63.1
C 14 238 46497 631.87 303 304 73.1
C 7 247 18316 246.39 303 304 73.1
C 3 233 11145 148.29 303 304 73.1
D 7 38 27936 355.4 312 303 77.8
D 2 234 10640 132.95 312 303 77.8
D 5 222 5543 67.39 312 303 77.8

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