ASTROSAT CZTI

Data Quality Report

Orbit 13820

Creation date: 2024-06-27T16:46:30.796218
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_199T01_9000002040_13820cztM0_level2.evt modeM0/AS1A04_199T01_9000002040_13820cztM0_level2_quad_clean.evt
Size (bytes)507,502,08088,655,040
Size484.0 MB 84.5 MB
Events in quadrant A3,134,702570,621
Events in quadrant B3,350,896582,383
Events in quadrant C3,075,599571,399
Events in quadrant D5,372,310511,511

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136113
B0140702
C0133512
D0204142

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6430681.057543%
B64301031.601866%
C6430310.482115%
D64305909.175739%

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 8576 6432 0 0 0.00% 0.00%
B 8576 6431 19 19 0.22% 0.30%
C 8576 6433 0 0 0.00% 0.00%
D 8576 6431 457 457 5.33% 7.11%

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 15 53696 326.67 786 769 162.0
A 1 162 26668 159.85 786 769 162.0
A 1 178 11155 64.1 786 769 162.0
B 0 219 62162 408.16 790 769 150.4
B 3 64 59048 387.46 790 769 150.4
B 3 209 36930 240.41 790 769 150.4
C 3 233 70088 388.72 766 771 178.3
C 4 175 13364 70.62 766 771 178.3
C 13 61 5510 26.58 766 771 178.3
D 10 157 1414494 7786.25 742 721 181.6
D 5 222 377433 2074.71 742 721 181.6
D 13 122 314220 1726.57 742 721 181.6

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