ASTROSAT CZTI

Data Quality Report

Orbit 25022

Creation date: 2024-06-27T19:12:51.028814
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/AS1A07_027T16_9000003666_25022cztM0_level2.evt modeM0/AS1A07_027T16_9000003666_25022cztM0_level2_quad_clean.evt
Size (bytes)200,761,92019,042,560
Size191.5 MB 18.2 MB
Events in quadrant A1,247,22699,990
Events in quadrant B1,305,634100,780
Events in quadrant C1,545,73790,816
Events in quadrant D1,795,53790,566

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A054650
B056060
C064070
D071270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A270640.147820%
B270630.110865%
C2707642.364241%
D2707833.066125%

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 2706 2706 0 0 0.00% 0.00%
B 2706 2706 0 0 0.00% 0.00%
C 2706 2706 32 32 1.18% 1.18%
D 2707 2707 77 77 2.84% 2.84%

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 13 254 4156 58.07 323 317 66.1
A 3 137 2941 39.69 323 317 66.1
A 0 226 2763 37.0 323 317 66.1
B 0 190 30072 481.17 319 311 61.9
B 0 229 8622 134.37 319 311 61.9
B 0 245 8398 130.75 319 311 61.9
C 7 247 314045 4429.85 298 300 70.8
C 14 238 49021 687.9 298 300 70.8
C 3 233 13505 186.44 298 300 70.8
D 7 238 263045 3460.73 307 298 75.9
D 10 70 227305 2989.99 307 298 75.9
D 8 195 127265 1672.33 307 298 75.9

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