ASTROSAT CZTI

Data Quality Report

Orbit 15756

Creation date: 2024-06-27T17:13:04.583026
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/AS1T02_088T01_9000002332_15756cztM0_level2.evt modeM0/AS1T02_088T01_9000002332_15756cztM0_level2_quad_clean.evt
Size (bytes)1,190,286,720230,106,240
Size1.1 GB 219.4 MB
Events in quadrant A8,636,8091,451,196
Events in quadrant B9,349,8591,464,003
Events in quadrant C8,464,9851,421,620
Events in quadrant D8,382,1551,395,615

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03640
B03640
C03640
D03640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0374984
B0388533
C0370833
D0374243

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A179482551.420771%
B179482041.136617%
C179482241.248050%
D179481590.885893%

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 19729 17952 32 32 0.16% 0.18%
B 19729 17952 23 23 0.12% 0.13%
C 19729 17952 1 1 0.01% 0.01%
D 19729 17952 42 42 0.21% 0.23%

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 9 143 236476 542.43 2148 2103 432.1
A 15 239 125217 284.94 2148 2103 432.1
A 0 226 18982 39.06 2148 2103 432.1
B 4 251 411609 999.02 2144 2095 409.9
B 4 216 122865 294.62 2144 2095 409.9
B 3 209 99332 237.21 2144 2095 409.9
C 14 238 312035 643.96 2053 2061 481.4
C 3 233 121880 248.92 2053 2061 481.4
C 10 187 19720 36.69 2053 2061 481.4
D 1 52 194966 343.82 2072 2026 561.2
D 2 234 76786 133.22 2072 2026 561.2
D 13 172 61053 105.19 2072 2026 561.2

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