ASTROSAT CZTI

Data Quality Report

Orbit 17279

Creation date: 2024-06-27T17:34:25.544986
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/AS1T03_059T01_9000002554_17279cztM0_level2.evt modeM0/AS1T03_059T01_9000002554_17279cztM0_level2_quad_clean.evt
Size (bytes)507,752,64086,348,160
Size484.2 MB 82.3 MB
Events in quadrant A3,859,249549,599
Events in quadrant B3,214,451560,150
Events in quadrant C3,215,636532,059
Events in quadrant D4,641,666514,268

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158772
B0138432
C0139202
D0183152

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65822073.144941%
B6582701.063507%
C65821081.640839%
D65823685.591006%

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 7672 6582 106 106 1.38% 1.61%
B 7672 6582 0 0 0.00% 0.00%
C 7672 6582 0 0 0.00% 0.00%
D 7672 6582 263 263 3.43% 4.00%

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 14 235 692758 4161.72 824 807 166.3
A 0 226 7187 38.37 824 807 166.3
A 3 137 6199 32.43 824 807 166.3
B 12 111 19201 117.35 821 801 156.8
B 11 111 16782 101.92 821 801 156.8
B 14 111 14797 89.26 821 801 156.8
C 14 238 121515 660.65 784 789 182.7
C 3 233 28087 149.38 784 789 182.7
C 7 220 8510 42.25 784 789 182.7
D 11 176 919744 4792.11 785 761 191.8
D 5 222 618514 3221.32 785 761 191.8
D 11 66 38298 195.74 785 761 191.8

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