ASTROSAT CZTI

Data Quality Report

Orbit 13245

Creation date: 2024-06-27T16:38:19.165402
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/AS1G08_077T01_9000001970_13245cztM0_level2.evt modeM0/AS1G08_077T01_9000001970_13245cztM0_level2_quad_clean.evt
Size (bytes)503,501,76093,864,960
Size480.2 MB 89.5 MB
Events in quadrant A3,040,616609,363
Events in quadrant B6,070,954553,345
Events in quadrant C2,902,355637,143
Events in quadrant D2,806,653602,951

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132023
B0223892
C0129212
D0129822

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6295190.301827%
B6295122319.428118%
C6295140.222399%
D629590.142971%

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 7606 6297 2 2 0.03% 0.03%
B 7606 6297 853 853 11.21% 13.55%
C 7606 6297 1 1 0.01% 0.02%
D 7606 6297 3 3 0.04% 0.05%

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 12 189 133154 887.04 739 722 149.3
A 15 239 38054 250.05 739 722 149.3
A 1 162 12577 79.41 739 722 149.3
B 4 239 3263739 25541.82 686 669 127.8
B 0 230 30694 235.02 686 669 127.8
B 0 219 25108 191.3 686 669 127.8
C 15 208 16336 92.26 739 744 169.0
C 13 61 5262 26.74 739 744 169.0
C 8 222 3045 13.62 739 744 169.0
D 1 52 47946 274.25 722 703 172.3
D 2 234 22045 123.89 722 703 172.3
D 14 34 10473 56.72 722 703 172.3

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