ASTROSAT CZTI

Data Quality Report

Orbit 18895

Creation date: 2024-06-27T17:56:14.483940
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_003T07_9000002818_18895cztM0_level2.evt modeM0/AS1A06_003T07_9000002818_18895cztM0_level2_quad_clean.evt
Size (bytes)524,180,160101,537,280
Size499.9 MB 96.8 MB
Events in quadrant A3,319,925667,677
Events in quadrant B4,808,566640,638
Events in quadrant C3,285,902645,060
Events in quadrant D3,981,013629,634

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145481
B0189891
C0143961
D0167571

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7058290.410881%
B70595237.408981%
C7059670.949143%
D70591351.912452%

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 7463 7059 0 0 0.00% 0.00%
B 7464 7060 320 320 4.29% 4.53%
C 7464 7060 0 0 0.00% 0.00%
D 7464 7060 75 75 1.00% 1.06%

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 6 16 64596 376.36 835 818 169.5
A 9 143 21777 123.68 835 818 169.5
A 0 13 9772 52.84 835 818 169.5
B 3 112 1373829 8879.5 806 784 154.6
B 7 220 125441 806.16 806 784 154.6
B 4 216 49298 313.74 806 784 154.6
C 14 238 125198 659.31 804 806 188.7
C 3 233 22059 112.65 804 806 188.7
C 0 207 6744 31.47 804 806 188.7
D 7 238 254515 1282.65 810 785 197.8
D 12 110 248422 1251.85 810 785 197.8
D 12 1 227375 1145.46 810 785 197.8

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