ASTROSAT CZTI

Data Quality Report

Orbit 17769

Creation date: 2024-06-27T17:40:39.978711
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_015T01_9000002650_17769cztM0_level2.evt modeM0/AS1A05_015T01_9000002650_17769cztM0_level2_quad_clean.evt
Size (bytes)578,949,12076,314,240
Size552.1 MB 72.8 MB
Events in quadrant A3,182,389475,874
Events in quadrant B3,335,895480,188
Events in quadrant C5,198,961450,234
Events in quadrant D5,363,930439,254

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139422
B0143102
C0198112
D0205822

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6669480.719748%
B6669761.139601%
C666992513.870145%
D66695908.846904%

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 7604 6670 0 0 0.00% 0.00%
B 7604 6669 11 11 0.14% 0.16%
C 7604 6670 472 472 6.21% 7.08%
D 7604 6670 431 431 5.67% 6.46%

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 39660 233.93 816 796 166.1
A 0 226 7053 37.66 816 796 166.1
A 12 194 6231 32.71 816 796 166.1
B 7 220 56761 355.57 815 794 157.4
B 0 219 26178 161.27 815 794 157.4
B 12 111 18379 111.72 815 794 157.4
C 4 254 2111111 12187.97 739 744 173.2
C 14 238 115110 660.5 739 744 173.2
C 5 218 45365 257.7 739 744 173.2
D 7 238 1641556 8885.14 769 749 184.7
D 1 52 294596 1591.21 769 749 184.7
D 10 70 197340 1064.56 769 749 184.7

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