ASTROSAT CZTI

Data Quality Report

Orbit 15822

Creation date: 2024-06-27T17:14:00.474147
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/AS1A04_143T01_9000002344_15822cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15822cztM0_level2_quad_clean.evt
Size (bytes)459,086,40095,754,240
Size437.8 MB 91.3 MB
Events in quadrant A3,303,075608,828
Events in quadrant B3,544,940627,277
Events in quadrant C3,348,081597,586
Events in quadrant D3,240,520587,482

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142873
B0149312
C0142722
D0142482

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6867260.378622%
B68671011.470802%
C6867540.786370%
D6867130.189311%

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 9333 6870 2 2 0.02% 0.03%
B 9333 6870 22 22 0.24% 0.32%
C 9333 6870 0 0 0.00% 0.00%
D 9333 6870 3 3 0.03% 0.04%

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 9 143 18918 104.49 851 832 173.1
A 15 239 11723 62.92 851 832 173.1
A 0 226 7517 38.62 851 832 173.1
B 0 182 94386 571.74 854 834 163.6
B 4 173 55455 333.81 854 834 163.6
B 0 229 22284 131.09 854 834 163.6
C 14 238 125623 641.83 823 830 194.4
C 7 247 6356 28.42 823 830 194.4
C 13 61 5928 26.22 823 830 194.4
D 7 223 33218 145.6 823 810 222.6
D 2 234 24811 107.83 823 810 222.6
D 2 152 19510 84.01 823 810 222.6

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