ASTROSAT CZTI

Data Quality Report

Orbit 18281

Creation date: 2024-06-27T17:47:48.251437
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/AS1A06_006T01_9000002720_18281cztM0_level2.evt modeM0/AS1A06_006T01_9000002720_18281cztM0_level2_quad_clean.evt
Size (bytes)521,841,60071,015,040
Size497.7 MB 67.7 MB
Events in quadrant A3,310,039440,182
Events in quadrant B3,412,547444,031
Events in quadrant C3,358,998431,674
Events in quadrant D5,311,697411,074

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134122
B0137992
C0136592
D0199592

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60641031.698549%
B60641201.978892%
C60641552.556069%
D60644236.975594%

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 7374 6065 0 0 0.00% 0.00%
B 7374 6065 5 5 0.07% 0.08%
C 7374 6065 0 0 0.00% 0.00%
D 7374 6065 228 228 3.09% 3.76%

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 15 174 21248 121.76 850 833 167.7
A 8 34 10476 57.51 850 833 167.7
A 13 210 8873 47.95 850 833 167.7
B 0 197 28834 176.48 850 831 158.7
B 4 171 22041 133.67 850 831 158.7
B 12 111 17610 105.74 850 831 158.7
C 14 238 128884 684.86 817 827 187.0
C 3 233 40625 212.84 817 827 187.0
C 13 61 5743 26.29 817 827 187.0
D 7 238 965591 4922.35 816 795 196.0
D 1 52 784320 3997.51 816 795 196.0
D 13 168 431130 2195.55 816 795 196.0

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