ASTROSAT CZTI

Data Quality Report

Orbit 12427

Creation date: 2024-06-27T16:27:10.863353
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/AS1A04_141T01_9000001848_12427cztM0_level2.evt modeM0/AS1A04_141T01_9000001848_12427cztM0_level2_quad_clean.evt
Size (bytes)1,446,053,760222,240,960
Size1.3 GB 211.9 MB
Events in quadrant A11,762,6231,403,678
Events in quadrant B10,160,0701,393,807
Events in quadrant C7,856,0871,415,516
Events in quadrant D12,818,2121,294,934

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0468804
B0419113
C0361493
D0504533

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03620
B03620
C03620
D03620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A177305252.961083%
B177307604.286520%
C17730570.321489%
D1773011366.407219%

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 19766 17731 314 314 1.59% 1.77%
B 19766 17731 511 511 2.59% 2.88%
C 19766 17733 7 7 0.04% 0.04%
D 19766 17734 1310 1310 6.63% 7.39%

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 13 251 2850197 6905.04 2036 1994 412.5
A 1 162 246685 593.22 2036 1994 412.5
A 8 15 208249 500.03 2036 1994 412.5
B 4 239 1766702 4595.02 2021 1972 384.1
B 3 64 245953 635.28 2021 1972 384.1
B 0 218 68378 172.91 2021 1972 384.1
C 15 208 90497 191.59 1988 1993 461.9
C 13 61 14649 27.4 1988 1993 461.9
C 8 128 8338 13.74 1988 1993 461.9
D 1 52 4891457 10565.47 1928 1873 462.8
D 14 34 219282 469.78 1928 1873 462.8
D 8 195 126920 270.2 1928 1873 462.8

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