ASTROSAT CZTI

Data Quality Report

Orbit 00750

Creation date: 2024-06-27T14:02:26.668059
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/AS1P01_010T01_9000000108_00750cztM0_level2.evt modeM0/AS1P01_010T01_9000000108_00750cztM0_level2_quad_clean.evt
Size (bytes)1,144,563,84085,449,600
Size1.1 GB 81.5 MB
Events in quadrant A7,064,399575,106
Events in quadrant B7,453,339581,293
Events in quadrant C6,777,755558,055
Events in quadrant D12,964,614447,087

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0253260
B0264620
C0244500
D0432760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A608210.016442%
B6082120.197304%
C608320.032879%
D6083254441.821470%

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 7252 6083 136 136 1.88% 2.24%
B 7252 6083 172 172 2.37% 2.83%
C 7253 6084 76 76 1.05% 1.25%
D 7253 6084 3279 3279 45.21% 53.90%

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 15 233 39945 86.56 1822 1841 440.2
A 13 17 19227 39.49 1822 1841 440.2
A 12 189 12386 23.95 1822 1841 440.2
B 8 234 34273 72.65 1917 1930 445.2
B 8 38 24366 50.4 1917 1930 445.2
B 5 191 18809 37.91 1917 1930 445.2
C 10 207 48141 98.25 1699 1757 472.1
C 15 241 40380 81.81 1699 1757 472.1
C 3 111 30115 60.07 1699 1757 472.1
D 13 25 6945578 15308.36 1471 1520 453.6
D 6 226 264222 579.13 1471 1520 453.6
D 12 22 125044 272.31 1471 1520 453.6

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