ASTROSAT CZTI

Data Quality Report

Orbit 18291

Creation date: 2024-06-27T17:47:56.990295
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_18291cztM0_level2.evt modeM0/AS1A06_006T01_9000002720_18291cztM0_level2_quad_clean.evt
Size (bytes)550,497,60081,720,000
Size525.0 MB 77.9 MB
Events in quadrant A3,911,341511,506
Events in quadrant B3,336,192519,352
Events in quadrant C3,164,366502,358
Events in quadrant D5,805,672473,743

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159412
B0141352
C0136332
D0218102

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6713871.295993%
B6713290.431998%
C6713340.506480%
D67132744.081633%

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 7783 6714 61 61 0.78% 0.91%
B 7783 6714 3 3 0.04% 0.04%
C 7783 6714 0 0 0.00% 0.00%
D 7783 6714 232 232 2.98% 3.46%

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 699036 4276.81 806 791 163.3
A 9 143 111059 675.4 806 791 163.3
A 0 226 7063 38.42 806 791 163.3
B 7 220 85139 538.09 813 792 156.8
B 0 197 25953 160.51 813 792 156.8
B 12 111 17979 109.64 813 792 156.8
C 14 238 119961 650.78 779 787 183.1
C 13 61 5539 25.95 779 787 183.1
C 3 233 4896 22.44 779 787 183.1
D 7 238 1920660 10066.21 775 752 190.7
D 1 52 365617 1913.01 775 752 190.7
D 13 168 248023 1296.46 775 752 190.7

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