ASTROSAT CZTI

Data Quality Report

Orbit 24771

Creation date: 2024-06-27T19:09:43.004332
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/AS1A07_147T01_9000003624_24771cztM0_level2.evt modeM0/AS1A07_147T01_9000003624_24771cztM0_level2_quad_clean.evt
Size (bytes)579,159,360104,034,240
Size552.3 MB 99.2 MB
Events in quadrant A4,117,042662,229
Events in quadrant B4,262,328667,351
Events in quadrant C4,171,901629,510
Events in quadrant D4,433,056622,879

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173852
B0176622
C0174052
D0183392

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81802372.897311%
B81813113.801491%
C81813334.070407%
D81812052.505806%

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 8760 8183 1 1 0.01% 0.01%
B 8761 8184 2 2 0.02% 0.02%
C 8761 8184 0 0 0.00% 0.00%
D 8761 8184 3 3 0.03% 0.04%

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 11164 46.96 1064 1039 215.6
A 3 137 10323 43.06 1064 1039 215.6
A 0 226 9006 36.95 1064 1039 215.6
B 3 64 81605 389.86 1052 1022 206.7
B 12 111 26321 122.4 1052 1022 206.7
B 0 230 24869 115.37 1052 1022 206.7
C 14 238 158639 655.83 1016 1021 240.3
C 7 247 48235 196.45 1016 1021 240.3
C 13 61 6914 24.52 1016 1021 240.3
D 8 195 342521 1335.24 1040 1009 255.8
D 1 52 121372 470.59 1040 1009 255.8
D 2 234 31695 119.98 1040 1009 255.8

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