ASTROSAT CZTI

Data Quality Report

Orbit 18542

Creation date: 2024-06-27T17:51:11.979090
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/AS1A05_082T12_9000002754_18542cztM0_level2.evt modeM0/AS1A05_082T12_9000002754_18542cztM0_level2_quad_clean.evt
Size (bytes)650,787,840104,276,160
Size620.6 MB 99.4 MB
Events in quadrant A6,231,026649,607
Events in quadrant B3,499,080724,719
Events in quadrant C3,261,002701,121
Events in quadrant D6,299,639650,242

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0226861
B0142481
C0135321
D0229811

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6193102916.615534%
B61941101.775912%
C6194921.485308%
D619488914.352599%

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 7553 6193 800 800 10.59% 12.92%
B 7554 6195 37 37 0.49% 0.60%
C 7554 6195 0 0 0.00% 0.00%
D 7554 6194 691 691 9.15% 11.16%

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 3227735 20993.59 769 754 153.7
A 13 210 30277 192.07 769 754 153.7
A 13 254 9848 59.16 769 754 153.7
B 3 64 200246 1280.2 827 808 155.8
B 0 197 27818 173.38 827 808 155.8
B 12 111 17737 108.67 827 808 155.8
C 14 238 126120 673.66 804 814 186.0
C 13 61 5553 25.48 804 814 186.0
C 3 233 2297 7.97 804 814 186.0
D 7 238 1904718 10217.28 772 751 186.3
D 1 52 894340 4795.28 772 751 186.3
D 13 153 462325 2476.95 772 751 186.3

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