ASTROSAT CZTI

Data Quality Report

Orbit 17252

Creation date: 2024-06-27T17:34:06.844275
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/AS1A05_185T04_9000002552_17252cztM0_level2.evt modeM0/AS1A05_185T04_9000002552_17252cztM0_level2_quad_clean.evt
Size (bytes)449,196,480106,292,160
Size428.4 MB 101.4 MB
Events in quadrant A3,393,025716,496
Events in quadrant B3,258,857716,120
Events in quadrant C3,231,153668,352
Events in quadrant D3,287,542673,239

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142062
B0137292
C0135773
D0139532

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6376801.254705%
B6377630.987925%
C6376851.333124%
D6376701.097867%

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 7631 6377 13 13 0.17% 0.20%
B 7632 6378 1 1 0.01% 0.02%
C 7631 6377 0 0 0.00% 0.00%
D 7631 6377 17 17 0.22% 0.27%

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 111695 662.17 833 818 167.4
A 15 174 73708 435.31 833 818 167.4
A 0 226 14282 80.41 833 818 167.4
B 12 111 17080 104.53 823 804 155.7
B 11 111 14745 89.53 823 804 155.7
B 14 111 11843 70.9 823 804 155.7
C 14 238 123499 679.94 784 792 180.5
C 3 233 44712 243.37 784 792 180.5
C 13 61 5520 26.2 784 792 180.5
D 13 189 108736 554.95 810 787 194.5
D 10 70 74458 378.73 810 787 194.5
D 2 234 24173 120.22 810 787 194.5

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