ASTROSAT CZTI

Data Quality Report

Orbit 07437

Creation date: 2024-06-27T15:19:42.670987
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/AS1A02_150T04_9000001022_07437cztM0_level2.evt modeM0/AS1A02_150T04_9000001022_07437cztM0_level2_quad_clean.evt
Size (bytes)1,104,209,280176,230,080
Size1.0 GB 168.1 MB
Events in quadrant A7,153,5771,056,863
Events in quadrant B7,652,8341,079,473
Events in quadrant C9,752,8461,074,521
Events in quadrant D7,815,6441,038,685

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03220
B03220
C03220
D03220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0324063
B0333623
C0399463
D0345223

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A157602291.453046%
B157602931.859137%
C157602061.307107%
D157602611.656091%

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 16270 15764 0 0 0.00% 0.00%
B 16270 15764 18 18 0.11% 0.11%
C 16270 15764 6 6 0.04% 0.04%
D 16270 15764 77 77 0.47% 0.49%

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 4 2 23353 57.61 1831 1784 374.4
A 0 23 21577 52.87 1831 1784 374.4
A 3 1 21428 52.47 1831 1784 374.4
B 0 214 199482 560.15 1844 1794 352.9
B 10 245 176887 496.13 1844 1794 352.9
B 4 81 77832 215.45 1844 1794 352.9
C 9 68 2730103 6579.77 1779 1786 414.7
C 1 16 32387 73.8 1779 1786 414.7
C 8 128 27498 62.01 1779 1786 414.7
D 2 14 292490 666.73 1784 1727 436.1
D 13 169 177469 402.98 1784 1727 436.1
D 7 55 127831 289.16 1784 1727 436.1

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