ASTROSAT CZTI

Data Quality Report

Orbit 01189

Creation date: 2024-06-27T14:08:52.369355
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/AS1G04_007T02_9000000220_01189cztM0_level2.evt modeM0/AS1G04_007T02_9000000220_01189cztM0_level2_quad_clean.evt
Size (bytes)1,147,144,32090,486,720
Size1.1 GB 86.3 MB
Events in quadrant A7,477,360618,868
Events in quadrant B7,866,675612,840
Events in quadrant C7,292,100590,999
Events in quadrant D11,697,281486,435

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0266152
B0277121
C0260581
D0394701

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6165440.713706%
B6165490.794809%
C6165160.259530%
D6165217135.214923%

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 6945 6166 247 247 3.56% 4.01%
B 6945 6166 325 325 4.68% 5.27%
C 6945 6166 169 169 2.43% 2.74%
D 6945 6166 2480 2480 35.71% 40.22%

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 8 14 144459 308.97 1900 1912 461.4
A 15 223 22269 44.12 1900 1912 461.4
A 8 15 8160 13.54 1900 1912 461.4
B 6 53 186395 393.89 1965 1974 468.2
B 2 32 49698 101.93 1965 1974 468.2
B 4 185 33851 68.08 1965 1974 468.2
C 15 241 357412 724.62 1763 1822 490.7
C 3 111 23085 43.33 1763 1822 490.7
C 3 79 22337 41.81 1763 1822 490.7
D 1 239 5648191 11841.03 1520 1568 476.9
D 10 84 262748 547.7 1520 1568 476.9
D 2 16 28346 56.15 1520 1568 476.9

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