ASTROSAT CZTI

Data Quality Report

Orbit 25282

Creation date: 2024-06-27T19:15:51.876588
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/AS1A09_006T01_9000003700_25282cztM0_level2.evt modeM0/AS1A09_006T01_9000003700_25282cztM0_level2_quad_clean.evt
Size (bytes)546,716,16068,904,000
Size521.4 MB 65.7 MB
Events in quadrant A3,311,982415,292
Events in quadrant B4,104,871413,554
Events in quadrant C3,747,093393,806
Events in quadrant D4,926,968384,170

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141120
B0164100
C0153400
D0191290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6886440.638978%
B68862984.327621%
C68861111.611966%
D68862083.020622%

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 7846 6887 0 0 0.00% 0.00%
B 7846 6887 115 115 1.47% 1.67%
C 7846 6887 4 4 0.05% 0.06%
D 7846 6887 145 145 1.85% 2.11%

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 13 254 10272 54.78 857 840 172.2
A 3 137 7928 41.17 857 840 172.2
A 0 226 7454 38.41 857 840 172.2
B 3 64 785219 4910.63 841 822 159.7
B 3 112 24277 146.84 841 822 159.7
B 12 111 19969 119.87 841 822 159.7
C 0 207 295292 1539.84 815 823 191.2
C 14 238 132086 686.4 815 823 191.2
C 0 239 102322 530.76 815 823 191.2
D 1 52 1179963 5906.22 822 796 199.6
D 8 195 605282 3027.75 822 796 199.6
D 2 234 28350 138.01 822 796 199.6

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