ASTROSAT CZTI

Data Quality Report

Orbit 16480

Creation date: 2024-06-27T17:23:19.756053
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/AS1A05_108T01_9000002438_16480cztM0_level2.evt modeM0/AS1A05_108T01_9000002438_16480cztM0_level2_quad_clean.evt
Size (bytes)1,301,754,240240,030,720
Size1.2 GB 228.9 MB
Events in quadrant A8,998,6801,503,919
Events in quadrant B10,180,5351,520,194
Events in quadrant C9,892,0581,465,794
Events in quadrant D9,050,5891,454,617

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03920
B03920
C03920
D03920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0397875
B0425124
C0411444
D0405814

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A192534412.290552%
B192535532.872280%
C192535532.872280%
D192533932.041240%

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 21279 19254 4 4 0.02% 0.02%
B 21279 19254 27 27 0.13% 0.14%
C 21279 19255 0 0 0.00% 0.00%
D 21279 19255 49 49 0.23% 0.25%

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 15 174 100609 210.29 2312 2254 467.7
A 0 226 20312 38.61 2312 2254 467.7
A 3 137 17384 32.35 2312 2254 467.7
B 15 35 252258 560.69 2304 2238 445.9
B 4 48 215213 477.61 2304 2238 445.9
B 3 209 208041 461.53 2304 2238 445.9
C 7 247 457026 866.59 2218 2229 524.8
C 3 233 448143 849.66 2218 2229 524.8
C 14 238 335411 634.86 2218 2229 524.8
D 10 70 275171 493.52 2257 2182 553.1
D 13 168 122738 217.95 2257 2182 553.1
D 1 52 100513 177.77 2257 2182 553.1

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