ASTROSAT CZTI

Data Quality Report

Orbit 26368

Creation date: 2024-06-27T19:28:13.702828
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/AS1A09_088T01_9000003812_26368cztM0_level2.evt modeM0/AS1A09_088T01_9000003812_26368cztM0_level2_quad_clean.evt
Size (bytes)1,651,440,960176,569,920
Size1.5 GB 168.4 MB
Events in quadrant A6,694,6221,181,550
Events in quadrant B6,556,1881,208,003
Events in quadrant C15,914,6131,042,992
Events in quadrant D19,937,514977,123

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0287410
B0282260
C0565870
D0685510

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A135441821.343768%
B135451761.299372%
C13545360526.614987%
D13545488136.035437%

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 16084 13546 24 24 0.15% 0.18%
B 16085 13547 3 3 0.02% 0.02%
C 16085 13547 2144 2144 13.33% 15.83%
D 16085 13546 3564 3564 22.16% 26.31%

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 0 13 229139 686.51 1657 1624 331.4
A 11 29 46289 134.77 1657 1624 331.4
A 6 16 25224 71.21 1657 1624 331.4
B 0 230 114497 364.94 1648 1607 309.3
B 12 111 37915 117.37 1648 1607 309.3
B 11 111 34285 105.64 1648 1607 309.3
C 3 233 8021985 24233.47 1429 1435 331.0
C 2 16 1724542 5206.23 1429 1435 331.0
C 4 254 378022 1137.83 1429 1435 331.0
D 7 80 9170866 28056.54 1374 1333 326.8
D 1 52 4811953 14719.33 1374 1333 326.8
D 11 176 636118 1942.29 1374 1333 326.8

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