ASTROSAT CZTI

Data Quality Report

Orbit 13788

Creation date: 2024-06-27T16:46:07.229602
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_13788cztM0_level2.evt modeM0/AS1A04_199T01_9000002040_13788cztM0_level2_quad_clean.evt
Size (bytes)478,817,28091,912,320
Size456.6 MB 87.7 MB
Events in quadrant A3,276,642581,195
Events in quadrant B3,829,451583,189
Events in quadrant C3,247,276579,428
Events in quadrant D3,677,537557,477

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142953
B0158342
C0141492
D0154812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6915420.607375%
B69151392.010123%
C6915200.289226%
D6915680.983369%

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 7771 6917 0 0 0.00% 0.00%
B 7771 6917 62 62 0.80% 0.90%
C 7771 6917 1 1 0.01% 0.01%
D 7771 6917 30 30 0.39% 0.43%

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 0 23 53527 311.49 822 803 169.3
A 8 15 23943 136.71 822 803 169.3
A 0 226 10816 59.16 822 803 169.3
B 0 219 493026 3135.5 817 795 157.0
B 4 80 32997 205.13 817 795 157.0
B 4 173 25856 159.64 817 795 157.0
C 3 233 118915 628.41 801 803 188.0
C 14 234 6719 31.48 801 803 188.0
C 13 61 5754 26.34 801 803 188.0
D 1 52 465313 2390.97 799 778 194.3
D 13 249 134574 688.65 799 778 194.3
D 2 234 26353 131.64 799 778 194.3

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