ASTROSAT CZTI

Data Quality Report

Orbit 33131

Creation date: 2024-06-27T20:45:17.918865
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/AS1A11_096T01_9000004766_33131cztM0_level2.evt modeM0/AS1A11_096T01_9000004766_33131cztM0_level2_quad_clean.evt
Size (bytes)1,642,008,960186,053,760
Size1.5 GB 177.4 MB
Events in quadrant A8,092,9161,148,680
Events in quadrant B12,194,1051,151,539
Events in quadrant C9,630,0821,127,691
Events in quadrant D18,662,8511,030,280

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03460
B03460
C03460
D03460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0345474
B0468283
C0392003
D0673683

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0660
C0660
D0660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17069170.099596%
B1706911786.901400%
C170692561.499795%
D17069260915.285020%

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 23552 17073 0 0 0.00% 0.00%
B 23552 17073 766 766 3.25% 4.49%
C 23552 17073 175 175 0.74% 1.03%
D 23552 17073 2076 2076 8.81% 12.16%

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 6 36453 83.22 2081 2039 413.6
A 13 254 29710 66.91 2081 2039 413.6
A 3 137 18765 40.44 2081 2039 413.6
B 5 172 3180358 8431.95 2015 1963 376.9
B 0 221 466888 1233.4 2015 1963 376.9
B 0 219 160723 421.17 2015 1963 376.9
C 7 221 1059783 2310.24 2002 2023 457.9
C 0 10 448736 975.66 2002 2023 457.9
C 1 241 77845 165.6 2002 2023 457.9
D 8 195 2853731 6111.62 1876 1830 466.6
D 2 249 1822964 3902.69 1876 1830 466.6
D 12 218 1733764 3711.53 1876 1830 466.6

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