ASTROSAT CZTI

Data Quality Report

Orbit 18802

Creation date: 2024-06-27T17:54:52.250703
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_024T01_9000002810_18802cztM0_level2.evt modeM0/AS1A05_024T01_9000002810_18802cztM0_level2_quad_clean.evt
Size (bytes)493,554,24073,045,440
Size470.7 MB 69.7 MB
Events in quadrant A3,359,999453,080
Events in quadrant B3,556,337459,131
Events in quadrant C3,507,054440,240
Events in quadrant D4,107,208430,480

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136821
B0143151
C0142272
D0161531

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61451302.115541%
B61461612.619590%
C61451612.620016%
D61452734.442636%

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 7400 6146 0 0 0.00% 0.00%
B 7401 6147 14 14 0.19% 0.23%
C 7400 6146 1 1 0.01% 0.02%
D 7400 6146 148 148 2.00% 2.41%

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 15 191 64285 376.75 854 838 168.4
A 13 254 10195 55.56 854 838 168.4
A 0 226 7681 40.63 854 838 168.4
B 7 220 105614 674.41 841 821 155.4
B 6 36 70319 447.27 841 821 155.4
B 0 189 17879 109.78 841 821 155.4
C 3 233 174665 929.14 817 823 187.1
C 14 238 129817 689.44 817 823 187.1
C 9 54 10433 51.36 817 823 187.1
D 5 222 473608 2433.88 822 801 194.3
D 1 52 472250 2426.89 822 801 194.3
D 7 238 45808 231.68 822 801 194.3

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